Cita APA

Alexander, G. (1947). An outline of general biology (5. ed.). New York: Barnes & noble.

Citación estilo Chicago

Alexander, Gordon. An Outline of General Biology. 5. ed. New York: Barnes & noble, 1947.

Cita MLA

Alexander, Gordon. An Outline of General Biology. 5. ed. New York: Barnes & noble, 1947.