APA (7th ed.) Zitazioa
Belth, J. E. (2013). Butterflies of Indiana: A field guide. Indiana University Press.
Chicago Style (17th ed.) Zitazioa
Belth, Jeffrey E. Butterflies of Indiana: A Field Guide. Bloomington: Indiana University Press, 2013.
MLA (9th ed.) Zitazioa
Belth, Jeffrey E. Butterflies of Indiana: A Field Guide. Indiana University Press, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.