APA (7th ed.) Citation

Baraniuk, R. G., & Burrus, C. S. (2008). Viewpoint: Global Warming Toward Open Educational Resources. Communications of the ACM, 51(9), 30. https://doi.org/10.1145/1378727.1388950

Chicago Style (17th ed.) Citation

Baraniuk, Richard G., and C. Sidney Burrus. "Viewpoint: Global Warming Toward Open Educational Resources." Communications of the ACM 51, no. 9 (2008): 30. https://doi.org/10.1145/1378727.1388950.

MLA (9th ed.) Citation

Baraniuk, Richard G., and C. Sidney Burrus. "Viewpoint: Global Warming Toward Open Educational Resources." Communications of the ACM, vol. 51, no. 9, 2008, p. 30, https://doi.org/10.1145/1378727.1388950.