Penggayaan APA
(at.all). (1957).
Elements of surpervision (2).
New York:
John Wiley & Sons.
Chicago Style
(at.all).
Elements of surpervision.
2
New York:
John Wiley & Sons,
1957.
Text.
MLA Style
(at.all).
Elements of surpervision.
2
New York:
John Wiley & Sons,
1957.
Text.
Turabian Style
(at.all).
Elements of surpervision.
2
New York:
John Wiley & Sons,
1957.
Print.