Roberts, W. H. (1941). The problem of choice: An introduction to ethics. Boston: Atheneum Press.
استشهاد بنمط شيكاغوRoberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.
MLA استشهادRoberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.