Shafer, Sheryl Rankin, et al. Virtual Schools In the U.s. 2017.
APA
Shafer, S., Shank, C., Gulosino, C., Rice, J., Barbour, M., Nitkin, D., Davidson, C., Molnar, A., Miron, G., & Herta, L.Virtual Schools in the U.S. 2017.
Chicago
Shafer, Sheryl Rankin, Christopher Shank, Charisse Gulosino, Jennifer King Rice, Michael K Barbour, David Nitkin, Caryn Davidson et al.Virtual Schools In the U.s. 2017.