MacGregor, Sandy
Students steps to success : 7 langkah menuju sukses = students steps to success
Hikmah, 2007
Buku Teks SO
Onwuegbuzie, Anthony
7 steps to a comprehensive literature review : a multimodal & cultural approach
SAGE, 2016
Buku Teks SO
Breithaupt, Tim
10 steps to sales success: the proven system that can shorten the selling cycle, double your close ratio, and significantly increase your income
American Management Association, 2003
eBooks
Walker, Peter
In the steps of Jesus
Kanisius, 2010
Buku Referensi
Ziglar, Zig
Steps to the top
Heinemann Asia, 1995
Buku Teks SO