APA (7th ed.) Citation

Ferguson, B. (1999). Scaling barriers. Choir & Organ, 7(2), 17.

Chicago Style (17th ed.) Citation

Ferguson, Barry. "Scaling Barriers." Choir & Organ 7, no. 2 (1999): 17.

MLA (9th ed.) Citation

Ferguson, Barry. "Scaling Barriers." Choir & Organ, vol. 7, no. 2, 1999, p. 17.