APA

Steinbeck J., Hopkins A., Potter J. & Trimarco P. (2008). the Grapes of Wrath. London: Penguin Readers.

Chicago

Steinbeck John, Hopkins Andy, Potter Jocelyn and Trimarco Paola. 2008. the Grapes of Wrath. London: Penguin Readers.

Harvard

Steinbeck J., Hopkins A., Potter J. and Trimarco P. (2008). the Grapes of Wrath. London: Penguin Readers.

MLA

Steinbeck John, Hopkins Andy, Potter Jocelyn and Trimarco Paola. the Grapes of Wrath. London: Penguin Readers. 2008.