Sehemu ya hisa.: 2176
Andika: Book, Kichwa: Invent To Learn: Making, Tinkering, and Engineering in the Class, Mwandishi (waandishi): Sylvia Libow Martinez, Gary S. Stager, Ph.D., Mchapishaji: Constructing Modern Knowledge Press, ISBN: 978-0-9891-5110-8,