Customs of the world. [s.n.].
Dyfyniad Arddull ChicagoCustoms of the World. [s.l.]: [s.n.].
Dyfyniad MLACustoms of the World. [s.n.].
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
Customs of the world. [s.n.].
Dyfyniad Arddull ChicagoCustoms of the World. [s.l.]: [s.n.].
Dyfyniad MLACustoms of the World. [s.n.].