Gaya APA
ENGLISH SOCIAL LETTER PATTERNS. (2000).
JAKARTA:
HARMONI.
Gaya Chicago
ENGLISH SOCIAL LETTER PATTERNS.
Cetakan 1.
JAKARTA:
HARMONI,
2000.
Text.
Gaya MLA
ENGLISH SOCIAL LETTER PATTERNS.
Cetakan 1.
JAKARTA:
HARMONI,
2000.
Text.
Gaya Turabian
ENGLISH SOCIAL LETTER PATTERNS.
JAKARTA:
HARMONI,
2000.
Print.