Andersen, A. O. (1923). The first forty lessons in harmony. Birchard.
Chicago Style (17th ed.) CitationAndersen, Arthur Olaf. The First Forty Lessons in Harmony. Boston: Birchard, 1923.
MLA (9th ed.) CitationAndersen, Arthur Olaf. The First Forty Lessons in Harmony. Birchard, 1923.
Warning: These citations may not always be 100% accurate.