Fischer, J. M., & John Martin Fischer; Mark Ravizza. (1992). Ethics: Poroblems and principles. Fort Worth: Harcourt Brace Jovanovich College Publishers.
Παραπομπή Chicago StyleFischer, John Martin, και John Martin Fischer; Mark Ravizza. Ethics: Poroblems and Principles. Fort Worth: Harcourt Brace Jovanovich College Publishers, 1992.
Παραπομπή MLAFischer, John Martin, και John Martin Fischer; Mark Ravizza. Ethics: Poroblems and Principles. Fort Worth: Harcourt Brace Jovanovich College Publishers, 1992.
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