APA

Hartwig G. W., Gerald W Hartwig, . (1976). The art of survival in East Africa. New York: Africana Pub. Co.

Chicago

Hartwig Gerald W, Gerald W Hartwig, . 1976. The art of survival in East Africa. New York: Africana Pub. Co.

Harvard

Hartwig G. W., Gerald W Hartwig, . (1976). The art of survival in East Africa. New York: Africana Pub. Co.

MLA

Hartwig Gerald W, Gerald W Hartwig, . The art of survival in East Africa. New York: Africana Pub. Co. 1976.