APA (7th ed.) Citation

Willoughby. (1999). The world of music (4th.ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.