APA (7th ed.) Zitazioa
Barr, S., & Luedecke, C. (2010). The History of the International Polar Years (IPYs). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-12402-0
Chicago Style (17th ed.) Zitazioa
Barr, Susan, eta Cornelia Luedecke. The History of the International Polar Years (IPYs). Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. https://doi.org/10.1007/978-3-642-12402-0.
MLA (9th ed.) Zitazioa
Barr, Susan, eta Cornelia Luedecke. The History of the International Polar Years (IPYs). Springer Berlin Heidelberg, 2010. https://doi.org/10.1007/978-3-642-12402-0.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.