Simon, S. B., Kirschenbaum, H., & Howe, L. W. (1972). Values Clarification: A handbook of practical strategies for teachers and students (ed.). Hart Publishing Company.
Lua i Stíl Chicago (17ú heag.)Simon, Sidney B., Howard Kirschenbaum, agus Leland W. Howe. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. ed. New York: Hart Publishing Company, 1972.
Lua MLA (9ú heag.)Simon, Sidney B., et al. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. ed. Hart Publishing Company, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.