Gaya APA
Steinbeck, John. (1979).
In Dubious Battle .
England:
Penguin Books.
Gaya Chicago
Steinbeck, John.
In Dubious Battle.
England:
Penguin Books,
1979.
Text.
Gaya MLA
Steinbeck, John.
In Dubious Battle.
England:
Penguin Books,
1979.
Text.
Gaya Turabian
Steinbeck, John.
In Dubious Battle.
England:
Penguin Books,
1979.
Print.