Kurtz, Linda Farris
Self-help and support group: a handbook for practitioners / Linda Farris Kurtz
Sage Publications, 1997
 Buku Teks
System design handbook
Monolithic Memories Inc., 1983
 Buku Referensi
Merril, Grayson, editor
Principles of guided missile design
D. Van Nostrand Company, 1958
 Buku Referensi
Timber design and construction handbook
Timber Engineering Company
F.W. Dodge Corp., 1956
 Buku Referensi
Church, James C.
Practical plumbing design guide
McGraw-Hill, 1979
 Buku Referensi