McCrimmon, J. M. (1967). Writing with a purpose: A first course in college composition (4th ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)McCrimmon, James McNab. Writing with a Purpose: A First Course in College Composition. 4th ed. Boston: Houghton Mifflin, 1967.
Lua MLA (9ú heag.)McCrimmon, James McNab. Writing with a Purpose: A First Course in College Composition. 4th ed. Houghton Mifflin, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.