Pennsylvania State University. Office for Distance Education & American Center for the Study of Distance Education. (1987). The American journal of distance education. Office for Distance Education of the College of Education at the Pennsylvania State University.
Čikaški stil citiranja (17. izdanje)Pennsylvania State University. Office for Distance Education i American Center for the Study of Distance Education. The American Journal of Distance Education. University Park, PA: Office for Distance Education of the College of Education at the Pennsylvania State University, 1987.
MLA način citiranja (9. izdanje)Pennsylvania State University. Office for Distance Education i American Center for the Study of Distance Education. The American Journal of Distance Education. Office for Distance Education of the College of Education at the Pennsylvania State University, 1987.