Παραπομπή APA

Steinbeck, J. (1939). The grapes of wrath. Heinnemann.

Παραπομπή Chicago Style

Steinbeck, John. The Grapes of Wrath. London: Heinnemann, 1939.

Παραπομπή MLA

Steinbeck, John. The Grapes of Wrath. Heinnemann, 1939.