Penggayaan APA
BECK, Robert C.. (1990).
Motivation : .
New Jersey:
Prentice Hall.
Chicago Style
BECK, Robert C..
Motivation :.
New Jersey:
Prentice Hall,
1990.
Text.
MLA Style
BECK, Robert C..
Motivation :.
New Jersey:
Prentice Hall,
1990.
Text.
Turabian Style
BECK, Robert C..
Motivation :.
New Jersey:
Prentice Hall,
1990.
Print.