APA

Watt K. E. F., . (1968). Ecology and resource management: a quantitative approach. New York: McGraw-Hill.

Chicago

Watt Kenneth E F, . 1968. Ecology and resource management: a quantitative approach. New York: McGraw-Hill.

Harvard

Watt K. E. F., . (1968). Ecology and resource management: a quantitative approach. New York: McGraw-Hill.

MLA

Watt Kenneth E F, . Ecology and resource management: a quantitative approach. New York: McGraw-Hill. 1968.