@book
{TN_libero_mab2,
author = {
Garbrick, Amy H.
},
title = {
Factors influencing student engagement in an online asynchronous discussion forum measured by quantity, quality, survey, and social network analysis
Ph.D. Dissertation
},
publisher = {ProQuest LLC.},
isbn = {9780438134836},
keywords = {
Hochschulschrift
},
year = {May 2018},
address = {
Ann Arbor, MI
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}