Cita APA (7th ed.)
Evans, W., & Codrescu, A. Signs. Getty Conservation Institute.
Cita Chicago (17th ed.)
Evans, Walker, i Andrei Codrescu. Signs. Los Angeles, EUA: Getty Conservation Institute.
Cita MLA (9th ed.)
Evans, Walker, i Andrei Codrescu. Signs. Getty Conservation Institute.
Atenció: Aquestes cites poden no estar 100% correctes.