Dyfyniad APA

GRAVER, B. (1971). Advanced english practice (2nd ed.). O.U.P.

Dyfyniad Arddull Chicago

GRAVER, B.D. Advanced English Practice. 2nd ed. London: O.U.P, 1971.

Dyfyniad MLA

GRAVER, B.D. Advanced English Practice. 2nd ed. O.U.P, 1971.

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