Dyfyniad APA

Griffin, C. L. (2018). Invitation to public speaking. Boston, MA: Cengage Learning.

Dyfyniad Arddull Chicago

Griffin, Cindy L. Invitation to Public Speaking. Boston, MA: Cengage Learning, 2018.

Dyfyniad MLA

Griffin, Cindy L. Invitation to Public Speaking. Boston, MA: Cengage Learning, 2018.

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