Gaya APA
English Guidance and Practice for SMTP. (1986).
Jakarta:
Pustaka Dian.
Gaya Chicago
English Guidance and Practice for SMTP.
Cet-3.
Jakarta:
Pustaka Dian,
1986.
Text.
Gaya MLA
English Guidance and Practice for SMTP.
Cet-3.
Jakarta:
Pustaka Dian,
1986.
Text.
Gaya Turabian
English Guidance and Practice for SMTP.
Jakarta:
Pustaka Dian,
1986.
Print.