APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.