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
Jackson, Paul
Origami : a complete step-by-step guide
Chancellor, 1994
 Buku Referensi
Alfaro-LeFevre, Rosalinda
Applying nursnig process : A step-by-step guide
Lippincott , 1998
 Buku Teks