Cita APA (7th ed.)

Ullman, J. R. (1924). Americans on Everest: The official account of the ascent by Norman G Dyhren Gurth. J. B. Lippincott.

Cita Chicago (17th ed.)

Ullman, James Ramsey. Americans on Everest: The Official Account of the Ascent by Norman G Dyhren Gurth. Philadelphia: J. B. Lippincott, 1924.

Cita MLA (9th ed.)

Ullman, James Ramsey. Americans on Everest: The Official Account of the Ascent by Norman G Dyhren Gurth. J. B. Lippincott, 1924.