Radford, D. (1994). Building machines and what they do (1st U.S. paperback ed.). Candlewick Press.
Cita Chicago Style (17a ed.)Radford, Derek. Building Machines and What They Do. 1st U.S. paperback ed. Cambridge, Mass.: Candlewick Press, 1994.
Cita MLA (8a ed.)Radford, Derek. Building Machines and What They Do. 1st U.S. paperback ed. Candlewick Press, 1994.
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