APA Style
Developing Skills. (1981).
Indonesia:
Elex Media Komputindo.
Chicago Style
Developing Skills.
1st edition.
Indonesia:
Elex Media Komputindo,
1981.
Text.
MLA Style
Developing Skills.
1st edition.
Indonesia:
Elex Media Komputindo,
1981.
Text.
Turabian Style
Developing Skills.
Indonesia:
Elex Media Komputindo,
1981.
Print.