APA Style
Principles of Economics : student work book. (1991).
Indonesia:
Elex Media Komputindo.
Chicago Style
Principles of Economics : student work book.
1st edition.
Indonesia:
Elex Media Komputindo,
1991.
Text.
MLA Style
Principles of Economics : student work book.
1st edition.
Indonesia:
Elex Media Komputindo,
1991.
Text.
Turabian Style
Principles of Economics : student work book.
Indonesia:
Elex Media Komputindo,
1991.
Print.