(1931). The Playthings Directory of the Toy Industry 1931. McCready Publishing Company.
Chicago-Zitierstil (17. Ausg.)The Playthings Directory of the Toy Industry 1931. New York: McCready Publishing Company, 1931.
MLA-Zitierstil (8. Ausg.)The Playthings Directory of the Toy Industry 1931. McCready Publishing Company, 1931.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.