Langone, J. (1999). National Geographic's how things work: : Everyday technology explained (1a ed.). National Geographic.
Cita Chicago Style (17a ed.)Langone, John. National Geographic's How Things Work: : Everyday Technology Explained. 1a ed. Washington, USA: National Geographic, 1999.
Cita MLA (9a ed.)Langone, John. National Geographic's How Things Work: : Everyday Technology Explained. 1a ed. National Geographic, 1999.
Precaución: Estas citas no son 100% exactas.