Dyfyniad APA

Osborn, M., & Osborn, S. (1994). Public Speaking (3rd ed.). Houghton Mifflin.

Dyfyniad Arddull Chicago

Osborn, Michael, and Suzanne Osborn. Public Speaking. 3rd ed. Boston: Houghton Mifflin, 1994.

Dyfyniad MLA

Osborn, Michael, and Suzanne Osborn. Public Speaking. 3rd ed. Houghton Mifflin, 1994.

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