APA Style
Ready Made business Letter. (1990).
Indonesia:
Elex Media Komputindo.
Chicago Style
Ready Made business Letter.
1st edition.
Indonesia:
Elex Media Komputindo,
1990.
Text.
MLA Style
Ready Made business Letter.
1st edition.
Indonesia:
Elex Media Komputindo,
1990.
Text.
Turabian Style
Ready Made business Letter.
Indonesia:
Elex Media Komputindo,
1990.
Print.