APA aipamena

Hindhu. (1992). Survey of the Environment 1992. Hindhu.

Chicago Style aipamena

Hindhu. Survey of the Environment 1992. Hindhu, 1992.

MLA aipamena

Hindhu. Survey of the Environment 1992. Hindhu, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.