APA (7th ed.) Citation

Read, C. B. (1939). Centers of population of learned groups. Science, 90, 61. https://doi.org/10.1126/science.90.2325.61

Chicago Style (17th ed.) Citation

Read, C. B. "Centers of Population of Learned Groups." Science 90 (1939): 61. https://doi.org/10.1126/science.90.2325.61.

MLA (9th ed.) Citation

Read, C. B. "Centers of Population of Learned Groups." Science, vol. 90, 1939, p. 61, https://doi.org/10.1126/science.90.2325.61.