Gaya APA

Krupnik, I. et al (2008). Smithsonian At the Poles: Contributions to International Polar Year Science . Washington DC: Smithsonian Institution Scholarly Press.

Gaya MLA

Krupnik, Igor. et al. "Smithsonian At the Poles: Contributions to International Polar Year Science". Washington DC: Smithsonian Institution Scholarly Press, 2008. Text.