APA aipamena

Sally Hewitt. (2000). Life Cycles (Discovering Nature). Copper Beech.

Chicago Style aipamena

Sally Hewitt. Life Cycles (Discovering Nature). Copper Beech, 2000.

MLA aipamena

Sally Hewitt. Life Cycles (Discovering Nature). Copper Beech, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.