Dyfyniad APA

Roberts, W. H. (1941). The problem of choice: An introduction to ethics. Boston: Atheneum Press.

Dyfyniad Arddull Chicago

Roberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.

Dyfyniad MLA

Roberts, William Hehry. The Problem of Choice: An Introduction to Ethics. Boston: Atheneum Press, 1941.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.