Porter, Lindsay
Caravan step-by-step owner's manual & service guide
Porter Publishing, 1995
 Buku Referensi
Ang, Tom
Digital photography : a step-by-step guide to creating and manipulating great images
Mitchell Beazley, 1999
 Buku Referensi
Drago, Carl
Implant restorations: a step-by-step guide
Blackwell Publishing, 2007
 Buku Referensi
Ziegler, Kathleen
Paper sculpture: a step-by-step guide
Rockport Publishers, 1994
 Buku Referensi
Drago, Carl
Implant Restorations : a step-by-step guide
Blackwell, 2014
 Buku Teks