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Widhiarso, W. and Sumintono, B. (2016) Examining response aberrance as a cause of outliers in statistical analysis. Personality and Individual Differences, 98. pp. 11-15.
Sumintono, B. and Widhiarso, W. (2015) Aplikasi pemodelan Rasch pada assessment pendidikan. Trim Komunikata, Cimahi, Indonesia.
Sumintono, B. and Widhiarso, W. (2014) Aplikasi model Rasch untuk penelitian ilmu-ilmu sosial (edisi revisi). Trim Komunikata Publishing House, Cimahi, Indonesia. ISBN 978-602-14371-1-7