Rushworth, D. J. (1972). An Investigation into Rock Climbing Efficiency.
シカゴスタイル引用形Rushworth, D. J. An Investigation Into Rock Climbing Efficiency. 1972.
MLA引用形式Rushworth, D. J. An Investigation Into Rock Climbing Efficiency. 1972.
警告: この引用は必ずしも正確ではありません.