Cita APA (7th ed.)

Steinbeck, J. (2001). The Pearl: Level 3. Penguin Books.

Cita Chicago (17th ed.)

Steinbeck, John. The Pearl: Level 3. London, England: Penguin Books, 2001.

Cita MLA (9th ed.)

Steinbeck, John. The Pearl: Level 3. Penguin Books, 2001.