APA (7th ed.) Zitazioa
ebrary, Inc, Ulrich, P. K., & Willett, J. H. (2010). Trends in ornithology research. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Pedro K. Ulrich, eta Julien H. Willett. Trends in Ornithology Research. New York: Nova Science Publishers, 2010.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Trends in Ornithology Research. Nova Science Publishers, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.