APA

Van den Berghe P. L., . (1979). Human family systems: an evolutionary view. New York: Elsevier.

Chicago

Van den Berghe Pierre L, . 1979. Human family systems: an evolutionary view. New York: Elsevier.

Harvard

Van den Berghe P. L., . (1979). Human family systems: an evolutionary view. New York: Elsevier.

MLA

Van den Berghe Pierre L, . Human family systems: an evolutionary view. New York: Elsevier. 1979.