APA (7th ed.) Citation

Gay, L. R., Mills, G. E., & Airasian, P. W. (2009). Educational research: Competencies for analysis and applications (Ninth edition.). Merrill/Pearson.

Chicago Style (17th ed.) Citation

Gay, L. R., Geoffrey E. Mills, and Peter W. Airasian. Educational Research: Competencies for Analysis and Applications. Ninth edition. Upper Saddle River, N.J: Merrill/Pearson, 2009.

MLA (9th ed.) Citation

Gay, L. R., et al. Educational Research: Competencies for Analysis and Applications. Ninth edition. Merrill/Pearson, 2009.