APA Style
Profesional Selling. (1991).
Indonesia:
Elex Media Komputindo.
Chicago Style
Profesional Selling.
1st edition.
Indonesia:
Elex Media Komputindo,
1991.
Text.
MLA Style
Profesional Selling.
1st edition.
Indonesia:
Elex Media Komputindo,
1991.
Text.
Turabian Style
Profesional Selling.
Indonesia:
Elex Media Komputindo,
1991.
Print.