Caldwell, A. (1969). Screw tug design rev by Jeffrey N Wood (2nd ed.).
シカゴスタイル引用形Caldwell, Allam. Screw Tug Design Rev by Jeffrey N Wood. 2nd ed. 1969.
MLA引用形式Caldwell, Allam. Screw Tug Design Rev by Jeffrey N Wood. 2nd ed. 1969.
警告: この引用は必ずしも正確ではありません.