(2014). Teaching and learning at a distance: Foundations of distance education (6. ed.). Information Age Publishing.
Chicago-Zitierstil (17. Ausg.)Teaching and Learning at a Distance: Foundations of Distance Education. 6. ed. Charlotte, North Carolina: Information Age Publishing, 2014.
MLA-Zitierstil (9. Ausg.)Teaching and Learning at a Distance: Foundations of Distance Education. 6. ed. Information Age Publishing, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.