Spilhaus, A., Spilhaus, K., & McClary, N. (1989). Mechanical Toys: How old Toys Work. Robert Hale.
Lua i Stíl Chicago (17ú heag.)Spilhaus, Athelstan, Kathleen Spilhaus, agus Nelson McClary. Mechanical Toys: How Old Toys Work. London: Robert Hale, 1989.
Lua MLA (8ú heag.)Spilhaus, Athelstan, et al. Mechanical Toys: How Old Toys Work. Robert Hale, 1989.
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