Simon, S. B., Howe, L. W., & Kirschenbaum, H. (1972). Values clarification: A handbook of practical strategies for teachers and students. Hart Pub. Co.
Citazione stile Chigago Style (17a edizione)Simon, Sidney B., Leland W. Howe, e Howard Kirschenbaum. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. New York: Hart Pub. Co, 1972.
Citatione MLA (9a ed.)Simon, Sidney B., et al. Values Clarification: A Handbook of Practical Strategies for Teachers and Students. Hart Pub. Co, 1972.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.