Litchfield, F. Pottery and porcelain: A guide to collectors (5th ed.).
Cita Chicago (17th ed.)Litchfield, Frederick. Pottery and Porcelain: A Guide to Collectors. 5th ed.
Cita MLA (8th ed.)Litchfield, Frederick. Pottery and Porcelain: A Guide to Collectors. 5th ed.
Atenció: Aquestes cites poden no estar 100% correctes.