Schoonmaker, P. N. (1981). A Collector's History of the Teddy Bear. Hobby House Press.
Chicago-Zitierstil (17. Ausg.)Schoonmaker, Patricia N. A Collector's History of the Teddy Bear. Cumberland: Hobby House Press, 1981.
MLA-Zitierstil (8. Ausg.)Schoonmaker, Patricia N. A Collector's History of the Teddy Bear. Hobby House Press, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.