THIS WEEK 50 YEARS AGO.

MLA

“This Week 50 Years Ago.” New Scientist, vol. 194, no. 2607, June 2007, p. 20. EBSCOhost, https://doi.org/10.1016/S0262-4079(07)61413-4.

APA

This Week 50 Years Ago. (2007). New Scientist, 194(2607), 20. https://doi.org/10.1016/S0262-4079(07)61413-4

Chicago

“This Week 50 Years Ago.” 2007. New Scientist 194 (2607): 20. doi:10.1016/S0262-4079(07)61413-4.