Peacock, Janet L., auhtor
Presenting medical statistics from proposal to publication: a step-by-step guide
Oxford University Press, 2007
 Buku Teks SO
Bluman, Allan G.
Elementary statistics : a step by step approach : a brief version / Allan G Bluman
McGraw-Hill, 2013
 Buku Teks SO
Richman, Larry
Project management step-by-step
[American Management Association, ], 2002
 eBooks
Sartika Kurniali
Step by step facebook
PT Gramedia, 2009
 Buku Teks SO
Jackson, Paul
Origami : a complete step-by-step guide
Chancellor, 1994
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