Murphy, P., Phillips, J., West Marvin, E., & Piper Clendinning, J. (2021). The Musician's Guide to aural Skills Ear-Training: Paul Murphy, Joel Phillips (autores) (cuarta edición.). W. W. Norton & Company, Ltd.
Chicago-referens (17:e uppl.)Murphy, Paul, Joel Phillips, Elizabeth West Marvin, och Jane Piper Clendinning. The Musician's Guide to Aural Skills Ear-Training: Paul Murphy, Joel Phillips (autores). cuarta edición. New York, NY: W. W. Norton & Company, Ltd, 2021.
MLA-referens (9:e uppl.)Murphy, Paul, et al. The Musician's Guide to Aural Skills Ear-Training: Paul Murphy, Joel Phillips (autores). cuarta edición. W. W. Norton & Company, Ltd, 2021.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.