Gaya APA
ENGLISH GUIDANCE AND PRACTICE FOR SMTP. (1986).
Nugraha:
Mc Graw hill.
Gaya Chicago
ENGLISH GUIDANCE AND PRACTICE FOR SMTP.
.
Nugraha:
Mc Graw hill,
1986.
Text.
Gaya MLA
ENGLISH GUIDANCE AND PRACTICE FOR SMTP.
.
Nugraha:
Mc Graw hill,
1986.
Text.
Gaya Turabian
ENGLISH GUIDANCE AND PRACTICE FOR SMTP.
Nugraha:
Mc Graw hill,
1986.
Print.