APA (7th ed.) Citation

Leedy, P. D., Ertmer, P. A., & Newby, T. J. (1997). Pratical research: Planning and design (6th ed.). Merrill.

Chicago Style (17th ed.) Citation

Leedy, Paul D., Peggy A. Ertmer, and Timothy J. Newby. Pratical Research: Planning and Design. 6th ed. Upper Saddle New Jersey: Merrill, 1997.

MLA (9th ed.) Citation

Leedy, Paul D., et al. Pratical Research: Planning and Design. 6th ed. Merrill, 1997.