Media type: E-Article Title: Cost‐effectiveness of online teacher training Contributor: Jung, Insung Published: Informa UK Limited, 2005 Published in: Open Learning: The Journal of Open, Distance and e-Learning, 20 (2005) 2, Seite 131-146 Language: English DOI: 10.1080/02680510500094140 ISSN: 0268-0513; 1469-9958 Origination: Footnote: