Ayers, D., & Harrison, D. (1991). Advertising Art of Steiff: Teddy Bears und Playthings. Hobby House Press.
Chicago-Zitierstil (17. Ausg.)Ayers, Dottie, 与 Donna Harrison. Advertising Art of Steiff: Teddy Bears Und Playthings. Cumberland: Hobby House Press, 1991.
MLA-Zitierstil (8. Ausg.)Ayers, Dottie, 与 Donna Harrison. Advertising Art of Steiff: Teddy Bears Und Playthings. Hobby House Press, 1991.
警告：这些引文格式不一定是100％准确.