Montgomery, C. (2013). German lyric diction workbook: A graded method of phonetic transcription that employs frequently occurring words from German art song literature : instructor's manual (Fourth edition.). S.T.M. Publishers.

Montgomery, Cheri. German Lyric Diction Workbook: A Graded Method of Phonetic Transcription That Employs Frequently Occurring Words from German Art Song Literature : Instructor's Manual. Fourth edition. Nashville, TN: S.T.M. Publishers, 2013.

Montgomery, Cheri. German Lyric Diction Workbook: A Graded Method of Phonetic Transcription That Employs Frequently Occurring Words from German Art Song Literature : Instructor's Manual. Fourth edition. S.T.M. Publishers, 2013.