Sidgwick, H. (1967). Outlines of the history of ethics: For English readers; with an additional chapter by Alban G. Widgery (6. ed., repr.). Macmillan.
Chicago Style (17th ed.) CitationSidgwick, Henry. Outlines of the History of Ethics: For English Readers; with an Additional Chapter by Alban G. Widgery. 6. ed., repr. London: Macmillan, 1967.
MLA (8th ed.) CitationSidgwick, Henry. Outlines of the History of Ethics: For English Readers; with an Additional Chapter by Alban G. Widgery. 6. ed., repr. Macmillan, 1967.
Warning: These citations may not always be 100% accurate.