APA

Little M. A., Haas J. D., . (1989). Human population biology. New York: Oxford University.

Chicago

Little Michael A, Haas Jere D, . 1989. Human population biology. New York: Oxford University.

Harvard

Little M. A., Haas J. D., . (1989). Human population biology. New York: Oxford University.

MLA

Little Michael A, Haas Jere D, . Human population biology. New York: Oxford University. 1989.