VoiceWorks : a "how-to" owner’s manual for vocal students and teachers, 160 - 03 - 01 - LD1017 .C8182 2008 A48, Volume: Archives LD1017.C8182 2008 A48; Volume: Carlson Library Level 3 Main Collection MT820 .A48 2007. Clarion University Archives.

VoiceWorks : a "how-to" owner’s manual for vocal students and teachers, 160 - 03 - 01 - LD1017 .C8182 2008 A48, Volume: Archives LD1017.C8182 2008 A48; Volume: Carlson Library Level 3 Main Collection MT820 .A48 2007. Clarion University Archives. http://as-clarion.klnpa.org/repositories/2/resources/701 Accessed December 24, 2025.