APA (7th ed.) Citation

Harder, P. O. (1978). Basic Materials in Music Theory A Programed Course (Fourth Edition). Allyn and Bacon.

Chicago Style (17th ed.) Citation

Harder, Paul O. Basic Materials in Music Theory A Programed Course (Fourth Edition). Allyn and Bacon, 1978.

MLA (8th ed.) Citation

Harder, Paul O. Basic Materials in Music Theory A Programed Course (Fourth Edition). Allyn and Bacon, 1978.

Warning: These citations may not always be 100% accurate.