APA

Engelmann K., . (1968). Building cooperative movements in developing counntries: the sociological and psychological aspects. New York: Praeger.

Chicago

Engelmann Konrad, . 1968. Building cooperative movements in developing counntries: the sociological and psychological aspects. New York: Praeger.

Harvard

Engelmann K., . (1968). Building cooperative movements in developing counntries: the sociological and psychological aspects. New York: Praeger.

MLA

Engelmann Konrad, . Building cooperative movements in developing counntries: the sociological and psychological aspects. New York: Praeger. 1968.