Dyfyniad APA

McCrimmon, J. M. (1963). Writing with a purpose (3rd ed.). Houghton.

Dyfyniad Arddull Chicago

McCrimmon, James M. Writing with a Purpose. 3rd ed. Boston: Houghton, 1963.

Dyfyniad MLA

McCrimmon, James M. Writing with a Purpose. 3rd ed. Houghton, 1963.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.