APA

Pfeiffer J. E., . (1985). The emergence of humankind. : .

Chicago

Pfeiffer John E, . 1985. The emergence of humankind. : .

Harvard

Pfeiffer J. E., . (1985). The emergence of humankind. : .

MLA

Pfeiffer John E, . The emergence of humankind. : . 1985.