Cita APA (7a ed.)

Wiley, D., III, J. L. H., Ellington, S., & Hall, T. (2012). A preliminary examination of the cost savings and learning impacts of using open textbooks in middle and high school science classes. Athabasca University Press.

Cita Chicago Style (17a ed.)

Wiley, David, John Levi Hilton III, Shelley Ellington, y Tiffany Hall. A Preliminary Examination of the Cost Savings and Learning Impacts of Using Open Textbooks in Middle and High School Science Classes. Athabasca University Press, 2012.

Cita MLA (8a ed.)

Wiley, David, et al. A Preliminary Examination of the Cost Savings and Learning Impacts of Using Open Textbooks in Middle and High School Science Classes. Athabasca University Press, 2012.