Royal Doulton Potteries. (1911). Catalogue of fitted sanitary appliances. Doulton.
Cita Chicago (17th ed.)Royal Doulton Potteries. Catalogue of Fitted Sanitary Appliances. Londres: Doulton, 1911.
Cita MLA (9th ed.)Royal Doulton Potteries. Catalogue of Fitted Sanitary Appliances. Doulton, 1911.
Atenció: Aquestes cites poden no estar 100% correctes.