(2012). Prosiding seminar nasional scan#3: 2012 : sticks and carrots reward and punishment, 15 Mei 2012. UAJY.
Chicago-viite (17. p.)Prosiding Seminar Nasional Scan#3: 2012 : Sticks and Carrots Reward and Punishment, 15 Mei 2012. UAJY, 2012.
MLA-viite (8. p.)Prosiding Seminar Nasional Scan#3: 2012 : Sticks and Carrots Reward and Punishment, 15 Mei 2012. UAJY, 2012.
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