Dyfyniad APA

LUCAS, S. E. (2020). The art of public speaking 13th ed. MC GRAW HILL.

Dyfyniad Arddull Chicago

LUCAS, Stephen E. The Art of Public Speaking 13th Ed. MC GRAW HILL, 2020.

Dyfyniad MLA

LUCAS, Stephen E. The Art of Public Speaking 13th Ed. MC GRAW HILL, 2020.

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