APA引文

Williams, G. (1951). Humanistic ethics. New York: Philosophical Library.

Trích dẫn kiểu Chicago

Williams, Gardner. Humanistic Ethics. New York: Philosophical Library, 1951.

MLA引文

Williams, Gardner. Humanistic Ethics. New York: Philosophical Library, 1951.

警告：这些引文格式不一定是100％准确.