Dyfyniad APA

Willoughby, D. (1999). The world of music (4th ed.). Mcgraw-Hill.

Dyfyniad Arddull Chicago

Willoughby, David. The World of Music. 4th ed. Boston: Mcgraw-Hill, 1999.

Dyfyniad MLA

Willoughby, David. The World of Music. 4th ed. Mcgraw-Hill, 1999.

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