APA ציטוט

Leedy, P. D., Newby, T. J., & Ertmer, P. A. (1997). Practical research: Planning and design (Sixth edition.). Merrill.

Chicago Style (17th ed.) Citation

Leedy, Paul D., Timothy J. Newby, and Peggy A. Ertmer. Practical Research: Planning and Design. Sixth edition. Upper Saddle River, New Jersey: Merrill, 1997.

ציטוט MLA

Leedy, Paul D., et al. Practical Research: Planning and Design. Sixth edition. Merrill, 1997.