McCrimmon, J. M. (1973). Writing with purpose. Houghton.
Cita Chicago (17th ed.)McCrimmon, James M. Writing with Purpose. Boston: Houghton, 1973.
Cita MLA (9th ed.)McCrimmon, James M. Writing with Purpose. Houghton, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.