APA - multiple works by the same author

Different works by the same author are listed in chronological (date) order.  

Example

Clarkson, P. M. (2006). Case report of exertional rhabdomyolysis in a 12-year-old boy. Medicine & Science in Sports & Exercise, 38(2), 197-200.

Clarkson, P. M. (2007). Exertional rhabdomyolysis and acute renal failure in marathon runners. Sports Medicine, 37(4-5), 361-363.

Clarkson, P. M. (2011). Another great year in the making. Exercise & Sport Sciences Reviews, 39(1), 1.

Clarkson, P. M., & Eichner, E. R. (2006). Exertional rhabdomyolysis: Does elevated blood creatine kinase foretell renal failure? Current Sports Medicine Reports, 5(2), 57-60.

References with the same first author and a different second or third author are listed alphabetically by author.

Example

Clarkson, P. M., Hoffman, E. P., Zambraski, E., Gordish-Dressman, H., Kearns, A., Hubal, M., ... Devaney, J. M. (2005). ACTN3 and MLCK genotype associations with exertional muscle damage. Journal of Applied Physiology, 99(2), 564-569.

Clarkson, P. M., & Kaufman, S. A. (2010). Should resistance exercise be recommended during breast cancer treatment? Medical Hypotheses, 75(2), 192-195.

Clarkson, P. M., Kearns, A. K., Rouzier, P., Rubin, R., & Thompson, P. D. (2006). Serum creatine kinase levels and renal function measures in exertional muscle damage. Medicine & Science in Sports & Exercise, 38(4), 623-627.

Clarkson, P. M., & Kroll, W. (1978). Practice effects on fractionated response time related to age and activity level. Journal of Motor Behavior, 10(4), 275-286.

If several works have the same date, as well as the same author, works are distinguished by suffixes a, b, c, etc. These are allocated in the reference list where they are ordered alphabetically by title.

Example

Ministry of Health. (2003). Child health information strategy. Wellington, New Zealand: Author.

Ministry of Health. (2007a). New Zealand smoking cessation guidelines. Retrieved from http://www.health.govt.nz/publication/new-zealand-smoking-cessation-guidelines

Ministry of Health. (2007b). Whānau ora health impact assessment. Wellington, New Zealand: Author.

Ministry of Health. (2008a). The B4 school check: A handbook for practitioners. Wellington, New Zealand: Author.

Ministry of Health. (2008b). Pacific cultural competencies: A literature review. Wellington, New Zealand: Author.

Ministry of Health. (2008c). A portrait of health: Key results of the 2006/07 New Zealand health survey. Wellington, New Zealand: Author.

Note: For print items when the Author is also the publisher use the word Author to indicate the publisher.

When citing two or more works by the same author, the different publication dates will lead the reader to the correct entry in the reference list.

• ... was found to be the case (Clarkson, 2006, 2007, 2011; Clarkson & Eichner, 2006; Clarkson et al., 2005; Clarkson & Kaufman, 2010; Clarkson, Kearns, Rouzier, Rubin, & Thompson, 2006).

• ... a health information strategy is needed for all New Zealanders (Ministry of Health, 2003, 2007a, 2007b, 2008a, 2008b, 2008c).

OR

• Clarkson (2006, 2007, 2011) found that attendance ...

• Ministry of Health (2003, 2007a, 2007b, 2008a, 2008b, 2008c) stated that the health of New Zealanders ...