Gaya APA
Shagan, Shagan. (1980).
The Formula .
USA:
Bantam Books.
Gaya Chicago
Shagan, Shagan.
The Formula.
USA:
Bantam Books,
1980.
Text.
Gaya MLA
Shagan, Shagan.
The Formula.
USA:
Bantam Books,
1980.
Text.
Gaya Turabian
Shagan, Shagan.
The Formula.
USA:
Bantam Books,
1980.
Print.