Cita APA (7th ed.)

Van Gigch, J. P. (1974). Applied general systems theory. Harper & Row.

Cita Chicago (17th ed.)

Van Gigch, John P. Applied General Systems Theory. New York: Harper & Row, 1974.

Cita MLA (8th ed.)

Van Gigch, John P. Applied General Systems Theory. Harper & Row, 1974.