Cita APA (7th ed.)

Browning, R., Dowden, E., & Schultheiss, C. (1949). The ring and the book. The Heritage Press.

Cita Chicago (17th ed.)

Browning, Robert, Edward Dowden, i Carl Schultheiss. The Ring and the Book. [New York]: The Heritage Press, 1949.

Cita MLA (9th ed.)

Browning, Robert, et al. The Ring and the Book. The Heritage Press, 1949.