APA-čujuhus (7. p.)
Ace communications. Hands on: Waste watchers. (TVE international.). ACE communications.
Chicago-čujuhus (17. p.)
Ace communications. Hands on: Waste Watchers. TVE international. Nairobi, Kenya: ACE communications.
MLA-čujuhus (9. p.)
Ace communications. Hands on: Waste Watchers. TVE international. ACE communications.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.