Cita APA (7th ed.)

Berrien, F. (1968). General and social systems. Rutgers U.Pr.

Cita Chicago (17th ed.)

Berrien, F.Kenneth. General and Social Systems. New Brunswick, N.J: Rutgers U.Pr, 1968.

Cita MLA (9th ed.)

Berrien, F.Kenneth. General and Social Systems. Rutgers U.Pr, 1968.