Cita APA (7a ed.)

Stephenson, C. (1960). Mediaeval feudalism (4th. print.). Great Seal Books.

Cita Chicago Style (17a ed.)

Stephenson, Carl. Mediaeval Feudalism. 4th. print. Ithaca: Great Seal Books, 1960.

Cita MLA (9a ed.)

Stephenson, Carl. Mediaeval Feudalism. 4th. print. Great Seal Books, 1960.