Dyfyniad APA
Griffin, E. (1997). A first look at communication theory (3rd ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Griffin, Em. A First Look at Communication Theory. 3rd ed. New York: McGraw-Hill, 1997.
Dyfyniad MLA
Griffin, Em. A First Look at Communication Theory. 3rd ed. McGraw-Hill, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.