Não informado. (2001). Annual report of the Department of the Interior. Department of the Interior.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Report of the Department of the Interior. Ottawa: Department of the Interior, 2001.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Report of the Department of the Interior. Department of the Interior, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.