(1931). The Playthings Directory of the Toy Industry 1931. McCready Publishing Company.
Citazione stile Chigago Style (17a edizione)The Playthings Directory of the Toy Industry 1931. New York: McCready Publishing Company, 1931.
Citatione MLA (8a ed.)The Playthings Directory of the Toy Industry 1931. McCready Publishing Company, 1931.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.