Pietsch, W. V. (1990). The serenity prayer book (1. ed.). Harper.
Chicago Style (17th ed.) CitationPietsch, William V. The Serenity Prayer Book. 1. ed. [London]: Harper, 1990.
MLA引文Pietsch, William V. The Serenity Prayer Book. 1. ed. Harper, 1990.
警告：這些引文格式不一定是100％准確.
