Citazione Stile APA (7a Edizione)

Francis, G., & Thorn, E. (1964). Mountain climbing (2nd ed.). English Universities Press.

Citazione stile Chigago Style (17a edizione)

Francis, Godfrey, e Erik Thorn. Mountain Climbing. 2nd ed. London: English Universities Press, 1964.

Citatione MLA (8a ed.)

Francis, Godfrey, e Erik Thorn. Mountain Climbing. 2nd ed. English Universities Press, 1964.