Gaya APA
Langan, John. (1985).
English Skills, 3rd ed. .
New York:
McGraw Hill.
Gaya Chicago
Langan, John.
English Skills, 3rd ed..
New York:
McGraw Hill,
1985.
Text.
Gaya MLA
Langan, John.
English Skills, 3rd ed..
New York:
McGraw Hill,
1985.
Text.
Gaya Turabian
Langan, John.
English Skills, 3rd ed..
New York:
McGraw Hill,
1985.
Print.