Dyfyniad APA

Spier, J. (2001). A catalogue of the Calouste Gulbenkian collection of gems. Calouste Gulbenkian Foundation.

Dyfyniad Arddull Chicago

Spier, Jeffrey. A Catalogue of the Calouste Gulbenkian Collection of Gems. Calouste Gulbenkian Foundation, 2001.

Dyfyniad MLA

Spier, Jeffrey. A Catalogue of the Calouste Gulbenkian Collection of Gems. Calouste Gulbenkian Foundation, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.