Gaya APA

Reed, P, G., Shearer, N, B, C. (2009). Perspective on Nursing Theory (5th Ed.). Philadelphia: Lippincott.

Gaya MLA

Reed, Pamela, G.., Shearer, Nelma, B., Crawford. "Perspective on Nursing Theory". 5th Ed. Philadelphia: Lippincott, 2009. Text.