Klingsieck, K. B., Fries, S., Horz, C., &; Hofer, M. (2012). Procrastination in a distance university setting. Distance Education, 295–310.https://doi.org/10.1080/01587919.2012.723165 
LibreCat: /record/29127
DOI: 10.1080/01587919.2012.723165