Elwell, J. B. (1912). The principles: Rules and laws of auction bridge stated, explained (New and enl. ed.). C. Scribner's sons.
Chicago Style (17th ed.) CitationElwell, J. B. The Principles: Rules and Laws of Auction Bridge Stated, Explained. New and enl. ed. New York: C. Scribner's sons, 1912.
MLA (9th ed.) CitationElwell, J. B. The Principles: Rules and Laws of Auction Bridge Stated, Explained. New and enl. ed. C. Scribner's sons, 1912.
Warning: These citations may not always be 100% accurate.