Cita APA (7th ed.)

Vigor, P. (1971). Books on communism and the communist countries. London: Ampersand.

Cita Chicago (17th ed.)

Vigor, P.H. Books on Communism and the Communist Countries. London: Ampersand, 1971.

Cita MLA (8th ed.)

Vigor, P.H. Books on Communism and the Communist Countries. London: Ampersand, 1971.