Louis, D. (1983). 2201 fascinating facts. Greenwich House.
Cita Chicago Style (17a ed.)Louis, David. 2201 Fascinating Facts. New York: Greenwich House, 1983.
Cita MLA (9a ed.)Louis, David. 2201 Fascinating Facts. Greenwich House, 1983.
Precaución: Estas citas no son 100% exactas.