MLA

Forte, Allen, and Steven E Gilbert. Instructor's Manual for Introduction to Schenkerian Analysis. New York: W.W. Norton & Company, 1982.

APA

Forte, A., & Gilbert, S. E. (1982). Instructor's manual for Introduction to Schenkerian analysis. New York: W.W. Norton & Company.

Chicago

Forte, Allen, and Steven E Gilbert. Instructor's Manual for Introduction to Schenkerian Analysis. New York: W.W. Norton & Company, 1982.