Cita APA (7th ed.)

COHN, P. (1971). Free rings and their relations. Academic Pr..

Cita Chicago (17th ed.)

COHN, P.M. Free Rings and Their Relations. London: Academic Pr., 1971.

Cita MLA (9th ed.)

COHN, P.M. Free Rings and Their Relations. Academic Pr., 1971.