APA (7th ed.) Citation

Polit-O'Hara, D., & Hungler, B. P. (1983). Nursing research: Principles and methods (2nd ed.). Lippincott.

Chicago Style (17th ed.) Citation

Polit-O'Hara, Denise, and Bernadette P. Hungler. Nursing Research: Principles and Methods. 2nd ed. Philadelphia: Lippincott, 1983.

MLA (8th ed.) Citation

Polit-O'Hara, Denise, and Bernadette P. Hungler. Nursing Research: Principles and Methods. 2nd ed. Lippincott, 1983.