Cita APA (7a ed.)
Piel, J. Scientific American: Science in the 20th Century : Special Issue : Vol. 3, Number 1, 1991. Scientific American.
Cita estilo Chicago (17a ed.)
Piel, Jonathan. Scientific American: Science in the 20th Century : Special Issue : Vol. 3, Number 1, 1991. Nueva York, EUA: Scientific American.
Cita MLA (9a ed.)
Piel, Jonathan. Scientific American: Science in the 20th Century : Special Issue : Vol. 3, Number 1, 1991. Scientific American.
Precaución: Estas citas no son 100% exactas.