APA

Pfeiffer J. E., . (1969). The emergence of man. New York: Harper & Row.

Chicago

Pfeiffer John E, . 1969. The emergence of man. New York: Harper & Row.

Harvard

Pfeiffer J. E., . (1969). The emergence of man. New York: Harper & Row.

MLA

Pfeiffer John E, . The emergence of man. New York: Harper & Row. 1969.