Dyfyniad APA

Gruber, D., & Dunn, V. Writing. Elementary.

Dyfyniad Arddull Chicago

Gruber, Diann, and Viviane Dunn. Writing. Elementary.

Dyfyniad MLA

Gruber, Diann, and Viviane Dunn. Writing. Elementary.

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