Dyfyniad APA
Benson, D. C. (1990). Common ground: The study guide for a four session course. Codel Inc.
Dyfyniad Arddull Chicago
Benson, Dennis C. Common Ground: The Study Guide for a Four Session Course. New York: Codel Inc, 1990.
Dyfyniad MLA
Benson, Dennis C. Common Ground: The Study Guide for a Four Session Course. Codel Inc, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.