APA aipamena

Pickard, R. (1996). Conservation in the built environment. Longman.

Chicago Style aipamena

Pickard, Robert. Conservation in the Built Environment. Harlow, Essex: Longman, 1996.

MLA aipamena

Pickard, Robert. Conservation in the Built Environment. Longman, 1996.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.