Dyfyniad APA

Fitzpatrick, C. H., & Ruscica, M. B. (1993). Reading thresholds. D.C. Heath.

Dyfyniad Arddull Chicago

Fitzpatrick, Carolyn H., and Marybeth B. Ruscica. Reading Thresholds. Lexington, Mass: D.C. Heath, 1993.

Dyfyniad MLA

Fitzpatrick, Carolyn H., and Marybeth B. Ruscica. Reading Thresholds. D.C. Heath, 1993.

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