APA Zitierstil

Wallace, S. A., & Lewis, M. D. (1990). Becoming a professional counselor;preparing for certification and comprehensive exams. Sage Publications.

Chicago Zitierstil

Wallace, Sheri A., und Michael D. Lewis. Becoming a Professional Counselor;preparing for Certification and Comprehensive Exams. London: Sage Publications, 1990.

MLA Zitierstil

Wallace, Sheri A., und Michael D. Lewis. Becoming a Professional Counselor;preparing for Certification and Comprehensive Exams. Sage Publications, 1990.