Fullerton, K., Greenberg, J., McClure, M., Rasmussen, E., & Stewart, D. (1999). A Digital Library for Education: The PEN-DOR Project.
Citazione stile Chigago Style (17a edizione)Fullerton, Karen, Jane Greenberg, Maureen McClure, Edie Rasmussen, e Darin Stewart. A Digital Library for Education: The PEN-DOR Project. 1999.
Citatione MLA (9a ed.)Fullerton, Karen, et al. A Digital Library for Education: The PEN-DOR Project. 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.