APA aipamena

Bibby, C. J. (1992). Bird Census Techniques Collin J. Bibby, Neil D. Burges. Academic.

Chicago Style aipamena

Bibby, Collin J. Bird Census Techniques Collin J. Bibby, Neil D. Burges. Academic, 1992.

MLA aipamena

Bibby, Collin J. Bird Census Techniques Collin J. Bibby, Neil D. Burges. Academic, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.