APA (7th ed.) Zitazioa
Callies, D. L. (2002). Historic preservation law in the United States. Environmental Law Institute.
Chicago Style (17th ed.) Zitazioa
Callies, David L. Historic Preservation Law in the United States. Washington, D.C.: Environmental Law Institute, 2002.
MLA (9th ed.) Zitazioa
Callies, David L. Historic Preservation Law in the United States. Environmental Law Institute, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.