Gilbert Chris & Laurie Williams. (1985). The A B C's of 1 2 3. B.P.B.
Dyfyniad Arddull ChicagoGilbert Chris and Laurie Williams. The A B C's of 1 2 3. New Delhi: B.P.B, 1985.
Dyfyniad MLAGilbert Chris and Laurie Williams. The A B C's of 1 2 3. B.P.B, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.