APA (7th ed.) Citation

Simpson, F. R. (1945). Cost trends in the telephone industry. Journal of Land & Public Utility Economics, 21, 286. https://doi.org/10.2307/3158897

Chicago Style (17th ed.) Citation

Simpson, F. R. "Cost Trends in the Telephone Industry." Journal of Land & Public Utility Economics 21 (1945): 286. https://doi.org/10.2307/3158897.

MLA (9th ed.) Citation

Simpson, F. R. "Cost Trends in the Telephone Industry." Journal of Land & Public Utility Economics, vol. 21, 1945, p. 286, https://doi.org/10.2307/3158897.