Cita APA (7th ed.)

Barr, J. (1961). Quatrefoil (3rd ed.). Vision.

Cita Chicago (17th ed.)

Barr, James. Quatrefoil. 3rd ed. London: Vision, 1961.

Cita MLA (8th ed.)

Barr, James. Quatrefoil. 3rd ed. Vision, 1961.