APA (7e ed.) Bronvermelding

(1931). The Playthings Directory of the Toy Industry 1931. McCready Publishing Company.

Chicago (17e ed.) Bronvermelding

The Playthings Directory of the Toy Industry 1931. New York: McCready Publishing Company, 1931.

MLA (8e ed.) Bronvermelding

The Playthings Directory of the Toy Industry 1931. McCready Publishing Company, 1931.

Let op: Deze citaties zijn niet altijd 100% accuraat.