Yeston, M., Kopit, A., & Okun, M. (1993). Nine (Rev. ed.). Cherry Lane Music : Exclusively distributed by H. Leonard.
Lua i Stíl Chicago (17ú heag.)Yeston, Maury, Arthur Kopit, agus Milton Okun. Nine. Rev. ed. Port Chester, NY: Cherry Lane Music : Exclusively distributed by H. Leonard, 1993.
Lua MLA (9ú heag.)Yeston, Maury, et al. Nine. Rev. ed. Cherry Lane Music : Exclusively distributed by H. Leonard, 1993.
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