Inc, R. M. (1937). Statements of payments and amounts due under the agreement of November 13, 1935. Saint Louis University Libraries Digitization Center.
Dyfyniad Arddull ChicagoInc, Ravenna Mosaics. Statements of Payments and Amounts Due Under the Agreement of November 13, 1935. Saint Louis University Libraries Digitization Center, 1937.
Dyfyniad MLAInc, Ravenna Mosaics. Statements of Payments and Amounts Due Under the Agreement of November 13, 1935. Saint Louis University Libraries Digitization Center, 1937.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.