In-text citation
Researchers have indicated that studies of pharmacological treatments for childhood obesity are inconclusive (Berkowitz et al., 2003; McDuffie et al., 2002).
Explain
When your parenthetical citation names two or more works, put them in the same order that they appear in the reference list, separated with semicolons.
Reference list entries
Berkowitz, R. I., Wadden, T. A., Tershakovec, A. M., & Cronquist, J. L. (2003). Behavior therapy and sibutramine for the treatment of adolescent obesity. Journal of the American Medical Association, 289, 1805-1812.
McDuffie, J. R., Calis, K. A., Uwaifo, G. I., Sebring, N. G., Fallon, E. M., Hubbard, V. S., & Yanovski, J. A. (2002). Three-month tolerability of orlistat in adolescents with obesity-related comorbid conditions. Obesity Research, 10, 642-650.
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