Dyfyniad APA

Hybels, S. (2009). Communicating effectively. Boston, Mass: McGraw-Hill.

Dyfyniad Arddull Chicago

Hybels, Saundra. Communicating Effectively. Boston, Mass: McGraw-Hill, 2009.

Dyfyniad MLA

Hybels, Saundra. Communicating Effectively. Boston, Mass: McGraw-Hill, 2009.

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