Roberts, W. H. (1941). The problem of choice: An introduction to ethics. Boston: Atheneum Press.
シカゴスタイル引用形Roberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.
MLA引用形式Roberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.
警告: この引用は必ずしも正確ではありません.