Vande Vere, E. K. (1979). Rugged heart: The story of George I. Butler. Southern Publishing Association.
Chicagoスタイル(17版)引用形式Vande Vere, Emmett K. Rugged Heart: The Story of George I. Butler. Nashville, TN: Southern Publishing Association, 1979.
MLA(9版)引用形式Vande Vere, Emmett K. Rugged Heart: The Story of George I. Butler. Southern Publishing Association, 1979.
警告: この引用は必ずしも正確ではありません.