Gaya APA

Polit, D, F., Hungler, B, P. (1985). Essentials Of Nursing Research : Methods and Applications . Boston: J. B. Lippincott Company.

Gaya MLA

Polit, Denise, F.., Hungler, Bernadette, P.. "Essentials Of Nursing Research : Methods and Applications". Boston: J. B. Lippincott Company, 1985. Text.