Gaya APA
Polit, D, F. et al (2001).
Essentials of Nursing Research: methods, appraisal, and utilization (5).
Amerika:
Lippincott Williams & Wilkins.
Gaya MLA
Polit, Danise, F.. et al.
"Essentials of Nursing Research: methods, appraisal, and utilization".
5
Amerika:
Lippincott Williams & Wilkins,
2001.
Text.