APA Style
Longman English Course Book I A. (1980).
Indonesia:
Elex Media Komputindo.
Chicago Style
Longman English Course Book I A.
1st edition.
Indonesia:
Elex Media Komputindo,
1980.
Text.
MLA Style
Longman English Course Book I A.
1st edition.
Indonesia:
Elex Media Komputindo,
1980.
Text.
Turabian Style
Longman English Course Book I A.
Indonesia:
Elex Media Komputindo,
1980.
Print.