Gaya APA

York, S, J, U, N. (2009). HIGHER EDUCATION IN VIRTUAL WORLDS: TEACHING AND LEARNING IN SECOND LIFE (CETAKAN PERTAMA). USA: Emerald Group Publishing Limited.

Gaya MLA

York, St., John’s, University,, New. "HIGHER EDUCATION IN VIRTUAL WORLDS: TEACHING AND LEARNING IN SECOND LIFE". CETAKAN PERTAMA USA: Emerald Group Publishing Limited, 2009. Text.