APA aipamena

BELL, G. (1973). Urban Environments And Human Behavior. s.n.

Chicago Style aipamena

BELL, Gwen. Urban Environments And Human Behavior. s.n, 1973.

MLA aipamena

BELL, Gwen. Urban Environments And Human Behavior. s.n, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.