APA (7th ed.) Citation

Witt, P. A., & Ellis, G. D. (1989). The leisure diagnostic battery users manual. Venture.

Chicago Style (17th ed.) Citation

Witt, Peter A., and Gary D. Ellis. The Leisure Diagnostic Battery Users Manual. State College, Pennsylvania: Venture, 1989.

MLA (9th ed.) Citation

Witt, Peter A., and Gary D. Ellis. The Leisure Diagnostic Battery Users Manual. Venture, 1989.