Cita APA (7th ed.)
McCrimmon, J. M., & Trimmer, J. F. (1988). Writing with a purpose (9th ed.). Houghton Mifflin.
Cita Chicago (17th ed.)
McCrimmon, James McNab, i Joseph F. Trimmer. Writing with a Purpose. 9th ed. Boston: Houghton Mifflin, 1988.
Cita MLA (9th ed.)
McCrimmon, James McNab, i Joseph F. Trimmer. Writing with a Purpose. 9th ed. Houghton Mifflin, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.