Stack, G. J. (1991). Kierkegaard's existential ethics (Reprint.). Gregg Revivals.
Chicago Style (17th ed.) CitationStack, George J. Kierkegaard's Existential Ethics. Reprint. Aldershot: Gregg Revivals, 1991.
MLA引文Stack, George J. Kierkegaard's Existential Ethics. Reprint. Gregg Revivals, 1991.
警告:這些引文格式不一定是100%准確.