APA-referens (7:e uppl.)

Yeston, M., Kopit, A., & Okun, M. (1993). Nine (Rev. ed.). Cherry Lane Music : Exclusively distributed by H. Leonard.

Chicago-referens (17:e uppl.)

Yeston, Maury, Arthur Kopit, och Milton Okun. Nine. Rev. ed. Port Chester, NY: Cherry Lane Music : Exclusively distributed by H. Leonard, 1993.

MLA-referens (9:e uppl.)

Yeston, Maury, et al. Nine. Rev. ed. Cherry Lane Music : Exclusively distributed by H. Leonard, 1993.