APA

Nelson G. E., Ray J. D., . (1974). Contemporary readings in biology. New York: John Wiley & Sons.

Chicago

Nelson Gideon E, Ray James Davis, . 1974. Contemporary readings in biology. New York: John Wiley & Sons.

Harvard

Nelson G. E., Ray J. D., . (1974). Contemporary readings in biology. New York: John Wiley & Sons.

MLA

Nelson Gideon E, Ray James Davis, . Contemporary readings in biology. New York: John Wiley & Sons. 1974.