APA

Simpson L. A. M., . (1972). An introduction to poetry. New York: St. Martin's Press.

Chicago

Simpson Louis Aston Marantz, . 1972. An introduction to poetry. New York: St. Martin's Press.

Harvard

Simpson L. A. M., . (1972). An introduction to poetry. New York: St. Martin's Press.

MLA

Simpson Louis Aston Marantz, . An introduction to poetry. New York: St. Martin's Press. 1972.