By Liu Feng   Ritzhaupt Albert   Cavanaugh Cathy   in Journal of Educational Administration

ISSN:0957-8234|51|5|576-593

Emerald Group Publishing Ltd‎(2013)‎

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By Hohlfeld Tina   Ritzhaupt Albert   Barron Ann   in Educational Technology Research and Development

ISSN:1042-1629|61|4|639-663

Springer Publishing Company ‎(2013)‎

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