Dyfyniad APA

Osborn, M., & Suzanne Osborn. (1988). Public Speaking. Houghton Mifflin Company.

Dyfyniad Arddull Chicago

Osborn, Michael, and Suzanne Osborn. Public Speaking. Boston, Massachusetts: Houghton Mifflin Company, 1988.

Dyfyniad MLA

Osborn, Michael, and Suzanne Osborn. Public Speaking. Houghton Mifflin Company, 1988.

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