Gaya APA

stommel, M., wil, C, E. (2004). Clinical Research: Concepts and Principles for Advanced Practice Nurses . : Lippincott williams & wilkins.

Gaya MLA

stommel, Manfred., wil, Celia, E.. "Clinical Research: Concepts and Principles for Advanced Practice Nurses". : Lippincott williams & wilkins, 2004. Text.