Getty Conservation Institute. (1991). Conservation: The GCI newsletter. Getty Conservation Institute.
Cita Chicago Style (17a ed.)Getty Conservation Institute. Conservation: The GCI Newsletter. Marina del Rey, Calif.: Getty Conservation Institute, 1991.
Cita MLA (8a ed.)Getty Conservation Institute. Conservation: The GCI Newsletter. Getty Conservation Institute, 1991.
Precaución: Estas citas no son 100% exactas.