@book{28625,
	author = {Preston, David Seth,},
	title = {Virtual Learning and Higher Education /},
	publisher = {Brill | Rodopi, },
	year = {2004.},
	series = {At the Interface / Probing the Boundaries ;},
	address = {Leiden; },
	url = {http://dx.doi.org/10.1163/9789401201056}
}