APA

Steinbeck J., . (1986). Tortilla Flat. New York: Penguin books.

Chicago

Steinbeck J, . 1986. Tortilla Flat. New York: Penguin books.

Harvard

Steinbeck J., . (1986). Tortilla Flat. New York: Penguin books.

MLA

Steinbeck J, . Tortilla Flat. New York: Penguin books. 1986.