Ruggiero, V. R. (1975). The moral imperative. Alfred Publishing Co..
Chicagoスタイル(17版)引用形式Ruggiero, Vincent Ryan. The Moral Imperative. Sherman Oaks, CA: Alfred Publishing Co., 1975.
MLA(9版)引用形式Ruggiero, Vincent Ryan. The Moral Imperative. Alfred Publishing Co., 1975.
警告: この引用は必ずしも正確ではありません.