APA

Clements F. e., Shelford V. e., . (1949). Bio-ecology. New York: John Wiley; Chapman and Hall.

Chicago

Clements Frederic e, Shelford Victor e, . 1949. Bio-ecology. New York: John Wiley; Chapman and Hall.

Harvard

Clements F. e., Shelford V. e., . (1949). Bio-ecology. New York: John Wiley; Chapman and Hall.

MLA

Clements Frederic e, Shelford Victor e, . Bio-ecology. New York: John Wiley; Chapman and Hall. 1949.