Brian Bracegirdce & W h Freeman. (1985). Atlas of empryology (3.). Heinemann educational books Ltd.
Chicago Style aipamenaBrian Bracegirdce and W h Freeman. Atlas of Empryology. 3. Heinemann educational books Ltd, 1985.
MLA aipamenaBrian Bracegirdce and W h Freeman. Atlas of Empryology. 3. Heinemann educational books Ltd, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.