Gaya APA

Hillary, S, E., Heiniger, A, J. (1993). Spirit of Enterprise : The 1993 Rolex Awards (Cet. 1). Switzerland: Buri International.

Gaya MLA

Hillary, Sir, Edmund., Heiniger, Andre, J.. "Spirit of Enterprise : The 1993 Rolex Awards". Cet. 1 Switzerland: Buri International, 1993. Text.