APA

Bertalanffy L. v., . (2015). General system theory. New York: George Braziller, Inc.

Chicago

Bertalanffy Ludwig von, . 2015. General system theory. New York: George Braziller, Inc.

Harvard

Bertalanffy L. v., . (2015). General system theory. New York: George Braziller, Inc.

MLA

Bertalanffy Ludwig von, . General system theory. New York: George Braziller, Inc. 2015.