Niebuhr, R. An interpretation of Christian ethics. Harper & Brothers.
Chicagoスタイル(17版)引用形式Niebuhr, Reinhold. An Interpretation of Christian Ethics. New York: Harper & Brothers.
MLA(9版)引用形式Niebuhr, Reinhold. An Interpretation of Christian Ethics. Harper & Brothers.
警告: この引用は必ずしも正確ではありません.