APA (7th ed.) Zitazioa
Carballo, M., & Hjelmar, U. (2008). Public Opinion Polling in a Globalized World. Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-540-75753-5
Chicago Style (17th ed.) Zitazioa
Carballo, Marita, eta Ulf Hjelmar. Public Opinion Polling in a Globalized World. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. https://doi.org/10.1007/978-3-540-75753-5.
MLA (9th ed.) Zitazioa
Carballo, Marita, eta Ulf Hjelmar. Public Opinion Polling in a Globalized World. Springer Berlin Heidelberg, 2008. https://doi.org/10.1007/978-3-540-75753-5.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.