Cita APA (7th ed.)

Simpson, J., & Collins, A. (2008). Touching the void (abridged version). Macmillan.

Cita Chicago (17th ed.)

Simpson, Joe, i Anne Collins. Touching the Void (abridged Version). Oxford: Macmillan, 2008.

Cita MLA (9th ed.)

Simpson, Joe, i Anne Collins. Touching the Void (abridged Version). Macmillan, 2008.