Gaya APA
Polit, Denise F.. (1999).
Nursing Research: Principles and Methods (ed. 6).
Philadelphia:
Lippincott.
Gaya Chicago
Polit, Denise F..
Nursing Research: Principles and Methods.
ed. 6
Philadelphia:
Lippincott,
1999.
Text.
Gaya MLA
Polit, Denise F..
Nursing Research: Principles and Methods.
ed. 6
Philadelphia:
Lippincott,
1999.
Text.
Gaya Turabian
Polit, Denise F..
Nursing Research: Principles and Methods.
ed. 6
Philadelphia:
Lippincott,
1999.
Print.