Cita APA (7a ed.)

Fullerton, K., Greenberg, J., McClure, M., Rasmussen, E., & Stewart, D. (1999). A Digital Library for Education: The PEN-DOR Project.

Cita Chicago Style (17a ed.)

Fullerton, Karen, Jane Greenberg, Maureen McClure, Edie Rasmussen, y Darin Stewart. A Digital Library for Education: The PEN-DOR Project. 1999.

Cita MLA (9a ed.)

Fullerton, Karen, et al. A Digital Library for Education: The PEN-DOR Project. 1999.