APA aipamena

Madrigal, Á. (2004). Migration and Emigration of Species.

Chicago Style aipamena

Madrigal, Álvaro. Migration and Emigration of Species. 2004.

MLA aipamena

Madrigal, Álvaro. Migration and Emigration of Species. 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.