APA Style

ERNST, C, H. (2015). Factors Driving Social Network Site Usage . Springer Fachmedien Wiesbaden: Springer Gabler Wiesbaden.

MLA Style

ERNST, Claus-Peter, H.. "Factors Driving Social Network Site Usage". Springer Fachmedien Wiesbaden: Springer Gabler Wiesbaden, 2015. Text.