Tan, E. L., & Mandin, B. L. (1993). Instrumental skills in the values development process. Values Education Program, Miriam College Graduate School.
Citazione stile Chigago Style (17a edizione)Tan, Earnest L., e Belen L. Mandin. Instrumental Skills in the Values Development Process. Quezon City: Values Education Program, Miriam College Graduate School, 1993.
Citatione MLA (9a ed.)Tan, Earnest L., e Belen L. Mandin. Instrumental Skills in the Values Development Process. Values Education Program, Miriam College Graduate School, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.