Dyfyniad APA

Tressler, J. C., & Christ, H. I. (1962). Grammar in action (4th ed.). Heath.

Dyfyniad Arddull Chicago

Tressler, Jacob C., and Henry I. Christ. Grammar in Action. 4th ed. Boston: Heath, 1962.

Dyfyniad MLA

Tressler, Jacob C., and Henry I. Christ. Grammar in Action. 4th ed. Heath, 1962.

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