APA aipamena

CLARK, D. (1996). Urban World Global City. Routledge.

Chicago Style aipamena

CLARK, David. Urban World Global City. Routledge, 1996.

MLA aipamena

CLARK, David. Urban World Global City. Routledge, 1996.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.