Research methodology: A practical and scientific approach
CRC Press, 2019
 eBooks
Snyder, Charles R.
Positive psychology: the scientific and practical explorations of human strengths
Sage , 2007
 Buku Teks SO
Snyder, Charles R.
Positive psychology: the scientific and practical explorations of human strengths
Sage, 2015
 Buku Teks SO
Sholapurkar, Amar A.
Publish and flourish: a practical guide for effective scientific writing
Jaypee Brothers Pvt. Ltd., 2011
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Rose, Marshall T.
The open book: a practical perspective on OSI
Prentice-Hall, 1990
 Buku Teks SO