APA

Sidwidk H., . (1960). Outlines of the history of ethics.for the English Readers. New York: Macmillan.

Chicago

Sidwidk Henry, . 1960. Outlines of the history of ethics.for the English Readers. New York: Macmillan.

Harvard

Sidwidk H., . (1960). Outlines of the history of ethics.for the English Readers. New York: Macmillan.

MLA

Sidwidk Henry, . Outlines of the history of ethics.for the English Readers. New York: Macmillan. 1960.