Perdew, L., & Rauch, M. (2019). Crazy contraptions: Build Rube Goldberg machines that swoop, spin, stack, and swivel : with hands on engineering activities. Nomad Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerdew, Laura, और Micah Rauch. Crazy Contraptions: Build Rube Goldberg Machines That Swoop, Spin, Stack, and Swivel : With Hands on Engineering Activities. White River Junction, VT: Nomad Press, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPerdew, Laura, और Micah Rauch. Crazy Contraptions: Build Rube Goldberg Machines That Swoop, Spin, Stack, and Swivel : With Hands on Engineering Activities. Nomad Press, 2019.
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