Spier, J. (2001). A catalogue of the Calouste Gulbenkian collection of gems. Calouste Gulbenkian Foundation.
Cita Chicago Style (17a ed.)Spier, Jeffrey. A Catalogue of the Calouste Gulbenkian Collection of Gems. Calouste Gulbenkian Foundation, 2001.
Cita MLA (8a ed.)Spier, Jeffrey. A Catalogue of the Calouste Gulbenkian Collection of Gems. Calouste Gulbenkian Foundation, 2001.
Precaución: Estas citas no son 100% exactas.