APA (7th ed.) Citation

Steinbeck, J. (1949). La perla. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Steinbeck, John. La Perla. New York: Appleton-Century-Crofts, 1949.

MLA (9th ed.) Citation

Steinbeck, John. La Perla. Appleton-Century-Crofts, 1949.