1. Arnold Bentley. Musical Ability in Children and Its Measurement. London: Harrap, 1966.
2.
2. Arnold Bentley. “Monotones and Musical Abilities”, Paper to the Seventh Biennial Conference of the International Society for Music Education, 1966.
3.
3. P. R. Farnsworth. The Social Psychology of Music. New York: Dryden Press c/o Holt, Rinehart & Winston, 1958.
4.
4. Edwin Gordon. “A Three-Year Longitudinal Predictive Validity Study of the Musical Aptitude Profile”, Studies in the Psychology of Music, Vol. 5 (1967), University of Iowa.
5.
5. L. G. Holmström. Musicality and Prognosis. Uppsala: Almqvist and Wiksells, 1963.
6.
6. E. L. Rainbow, “A Pilot Study to Investigate the Constructs of Musical Aptitude”, Journal of Research in Music Education, XIII (Spring 1965), 3–14.
7.
7. Amram Scheinfeld. You and Heredity. New York: Stokes, 1939.
8.
8. Rosamund Shuter., “Hereditary and Environmental Factors in Musical Ability”, Eugenic Review, LVIII (1966), 149–156.
9.
9. Amram Scheinfeld. The Psychology of Musical Ability. London: Methuens, 1968.
10.
10. R. Smith “Patterns of Meaning in Aesthetic Education: With Special Reference to the Teaching of Music and Art at the Secondary Level (7–12)”, Bulletin of the Council for Research in Music Education (Spring 1965), 1–12.
11.
11. B. M. Teplov. Psychologie des Aptitudes Musicales. Paris: Presses Universitaires de France, 1966.
12.
12. Rupert Thackray. “Rhythmic Abilities”, paper to Second Conference on Research in Music Education, Reading, 1966.
13.
13. R. Updegraff, L. Heileger, and J. Learned, “The Effect of Training Upon the Singing Ability and Musical Interest of Three-, Four-, and Five-Year-Old Children”, University of Iowa Studies in Child Welfare, XIV (1938), 83–121.
14.
14. H. D. Wing, “A Factorial Study of Musical Tests”, British Journal of Psychology, XXXI (1941), 341–355.
15.
15. R. F. Wyatt, “The Improvability of Pitch Discrimination”, Psychology Monograph, LVIII (1945), 1–58.