Cita APA (7th ed.)

Penn Warren, R. The patented gate and the mean Hamburger: Robert Penn Warren. The South.(1979).

Cita Chicago (17th ed.)

Penn Warren, Robert. "The Patented Gate and the Mean Hamburger: Robert Penn Warren." The South.(1979) .

Cita MLA (8th ed.)

Penn Warren, Robert. "The Patented Gate and the Mean Hamburger: Robert Penn Warren." The South.(1979), .