APA (7th ed.) Citation

Pearl, R., & LeBlanc, T. J. (1922). Further note on the age index of a population. Proceedings of the National Academy of Sciences of the United States of America, 8, 300. https://doi.org/10.1073/pnas.8.10.300

Chicago Style (17th ed.) Citation

Pearl, Raymond, and T. J. LeBlanc. "Further Note on the Age Index of a Population." Proceedings of the National Academy of Sciences of the United States of America 8 (1922): 300. https://doi.org/10.1073/pnas.8.10.300.

MLA (9th ed.) Citation

Pearl, Raymond, and T. J. LeBlanc. "Further Note on the Age Index of a Population." Proceedings of the National Academy of Sciences of the United States of America, vol. 8, 1922, p. 300, https://doi.org/10.1073/pnas.8.10.300.