Gaya APA
Hobbs, J.. (1980).
Longman English Course : Book 1a (Cet. 1.--).
Yogyakarta:
Kanisius.
Gaya Chicago
Hobbs, J..
Longman English Course : Book 1a.
Cet. 1.--
Yogyakarta:
Kanisius,
1980.
Text.
Gaya MLA
Hobbs, J..
Longman English Course : Book 1a.
Cet. 1.--
Yogyakarta:
Kanisius,
1980.
Text.
Gaya Turabian
Hobbs, J..
Longman English Course : Book 1a.
Cet. 1.--
Yogyakarta:
Kanisius,
1980.
Print.