Cita APA (7a ed.)
Trimmer, J. F., & McCrimmon, J. M. (1988). Writing with a purpose (9.ed.). Houghton Mifflin Company.
Cita Chicago Style (17a ed.)
Trimmer, Joseph F., y James M. McCrimmon. Writing with a Purpose. 9.ed. Boston: Houghton Mifflin Company, 1988.
Cita MLA (9a ed.)
Trimmer, Joseph F., y James M. McCrimmon. Writing with a Purpose. 9.ed. Houghton Mifflin Company, 1988.
Precaución: Estas citas no son 100% exactas.