Gaya APA
Steinhoff, Dan. (1979).
The World of Business .
Usa:
Grolier Incorporated .
Gaya Chicago
Steinhoff, Dan.
The World of Business.
Usa:
Grolier Incorporated ,
1979.
Text.
Gaya MLA
Steinhoff, Dan.
The World of Business.
Usa:
Grolier Incorporated ,
1979.
Text.
Gaya Turabian
Steinhoff, Dan.
The World of Business.
Usa:
Grolier Incorporated ,
1979.
Print.