APA (7th ed.) Citation

Walker, D. R. (1993). Mastery standards for collegiate racquetball classes. [publisher not identified].

Chicago Style (17th ed.) Citation

Walker, David R. Mastery Standards for Collegiate Racquetball Classes. [Place of publication not identified]: [publisher not identified], 1993.

MLA (9th ed.) Citation

Walker, David R. Mastery Standards for Collegiate Racquetball Classes. [publisher not identified], 1993.