APA Style
Vocabulary Development Skills. (1991).
Yogyakarta:
Kanisius.
Chicago Style
Vocabulary Development Skills.
Cet.1.
Yogyakarta:
Kanisius,
1991.
Text.
MLA Style
Vocabulary Development Skills.
Cet.1.
Yogyakarta:
Kanisius,
1991.
Text.
Turabian Style
Vocabulary Development Skills.
Yogyakarta:
Kanisius,
1991.
Print.