Cite
50, 100, & 150 Years Ago.
MLA
Piaget, Jean. “50, 100, & 150 Years Ago.” Scientific American, vol. 289, no. 5, Nov. 2003, p. 16. EBSCOhost, https://doi.org/10.1038/scientificamerican1103-16.
APA
Piaget, J. (2003). 50, 100, & 150 Years Ago. Scientific American, 289(5), 16. https://doi.org/10.1038/scientificamerican1103-16
Chicago
Piaget, Jean. 2003. “50, 100, & 150 Years Ago.” Scientific American 289 (5): 16. doi:10.1038/scientificamerican1103-16.