APA Style
International Business Letters : membuat surat bis. (2000).
Indonesia:
Elex Media Komputindo.
Chicago Style
International Business Letters : membuat surat bis.
1st edition.
Indonesia:
Elex Media Komputindo,
2000.
Text.
MLA Style
International Business Letters : membuat surat bis.
1st edition.
Indonesia:
Elex Media Komputindo,
2000.
Text.
Turabian Style
International Business Letters : membuat surat bis.
Indonesia:
Elex Media Komputindo,
2000.
Print.