Hasegawa, Noriyoshi, author
Sketching interiors: coloured pencils: a step-by-step guide
Page one publishing pte ltd, 2010
 Buku Teks
Suwardi Luis, author
Step by step in cascading balanced scorecard to functional scorecards
Gramedia Pustaka Utama, 2010
 Buku Teks
Chang, Valeri, author
Developing helping skills: a step-by-step approach to competency
Cengage Learning, 2013
 Buku Teks
Porter, Lindsay, author
Caravan step-by-step owner's manual & service guide
Porter Publishing, 1995
 Buku Referensi
Kumar, Ranjit, author
Research Methodology : a step-by-step guide for beginners
Sage , 2014
 Buku Teks