(1988). Biodiversity. National Academy.
Chicago Style aipamenaBiodiversity. National Academy, 1988.
MLA aipamenaBiodiversity. National Academy, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(1988). Biodiversity. National Academy.
Chicago Style aipamenaBiodiversity. National Academy, 1988.
MLA aipamenaBiodiversity. National Academy, 1988.