Porter, Lindsay
Caravan step-by-step owner's manual & service guide
Porter Publishing, 1995
 Buku Referensi
Jackson, Paul
Origami : a complete step-by-step guide
Chancellor, 1994
 Buku Referensi
Griffith, H. Winter
Vitamins Herb, Minerals & Supplements The Complete Guide
Fisher Books, 1998
 Buku Teks
Baker, Sunny
Ontime/onbudget: a step-by-step guide for managing any project
Prentice-Hall, 1992
 Buku Referensi
Katz, William A., 1924-
Your library : a reference guide
Holt, Rinehart and Winston, 1979
 Buku Teks