Original: EarMaster 6 Pro. – Dr. David Ehrke, Professor of Music, University of Nevada, Reno. EarMaster 6 Pro ear Training Software. Windows.
Traducció: EarMaster Pro 6. - Dr David Ehrke, Professor de Música de la Universitat de Nevada, Reno. Finestres. EI.EM11121. ISBN 746290111216.