Cita APA

Gerber, P. L. (1966). Robert Frost. New York: Twayne Publishers, Inc.

Citación estilo Chicago

Gerber, Philip L. Robert Frost. New York: Twayne Publishers, Inc, 1966.

Cita MLA

Gerber, Philip L. Robert Frost. New York: Twayne Publishers, Inc, 1966.