(1940). Directory of Medical Specialists, 1939, certified by American Boards.
シカゴスタイル引用形Directory of Medical Specialists, 1939, Certified By American Boards. 1940.
MLA引用形式Directory of Medical Specialists, 1939, Certified By American Boards. 1940.
警告: この引用は必ずしも正確ではありません.