Originalno: One Minute Theory. For The Choral Musc Classroom. Ronald Slabbinck. Voice sheet music. One Minute Theory. Edited by Holly Slabbinck.
Prevod: Za zborovske Musc Učilnica. Voice note. Uredil Holly Slabbinck. Za zbor. Glas. One Minute Series. Pedagoško in General Theory.
