Penggayaan APA
HENDERSON, J. VERNON. (1991).
Principles of economics .
Toronto:
D.C Heath and Company.
Chicago Style
HENDERSON, J. VERNON.
Principles of economics.
Toronto:
D.C Heath and Company,
1991.
Text.
MLA Style
HENDERSON, J. VERNON.
Principles of economics.
Toronto:
D.C Heath and Company,
1991.
Text.
Turabian Style
HENDERSON, J. VERNON.
Principles of economics.
Toronto:
D.C Heath and Company,
1991.
Print.