Perrin, R. (1990). The Beacon handbook (2nd ed.). Houghton Mifflin Co..
Cita Chicago (17th ed.)Perrin, Robert. The Beacon Handbook. 2nd ed. Boston: Houghton Mifflin Co., 1990.
Cita MLA (9th ed.)Perrin, Robert. The Beacon Handbook. 2nd ed. Houghton Mifflin Co., 1990.
Atenció: Aquestes cites poden no estar 100% correctes.