APA (7th ed.) Citation

Polit, D. F., & Hungler, B. P. (1991). Nursing research: Principles and methods. Lippincott.

Chicago Style (17th ed.) Citation

Polit, Denise F., and Bernadette P. Hungler. Nursing Research: Principles and Methods. Philadelphia: Lippincott, 1991.

MLA (9th ed.) Citation

Polit, Denise F., and Bernadette P. Hungler. Nursing Research: Principles and Methods. Lippincott, 1991.