Dyfyniad APA

Sullivan, P. N., & Phong, G. Y. (1991). Super course for the TOELF. London: Prentice-Hall.

Dyfyniad Arddull Chicago

Sullivan, Patricia N., và Grace Y.q Phong. Super Course for the TOELF. London: Prentice-Hall, 1991.

Dyfyniad MLA

Sullivan, Patricia N., và Grace Y.q Phong. Super Course for the TOELF. London: Prentice-Hall, 1991.

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