Ullman, J. R. (1924). Americans on Everest: The official account of the ascent by Norman G Dyhren Gurth. J. B. Lippincott.
Chicagoスタイル(17版)引用形式Ullman, James Ramsey. Americans on Everest: The Official Account of the Ascent by Norman G Dyhren Gurth. Philadelphia: J. B. Lippincott, 1924.
MLA(9版)引用形式Ullman, James Ramsey. Americans on Everest: The Official Account of the Ascent by Norman G Dyhren Gurth. J. B. Lippincott, 1924.
警告: この引用は必ずしも正確ではありません.