Dyfyniad APA

Habeler, P. (1979). Everest, impossible victory. Sphere Books Limited.

Dyfyniad Arddull Chicago

Habeler, Peter. Everest, Impossible Victory. London: Sphere Books Limited, 1979.

Dyfyniad MLA

Habeler, Peter. Everest, Impossible Victory. Sphere Books Limited, 1979.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.