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
Maitra, Gitin M.
Handbook of gear design
Tata McGraw-Hill, 1994
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Merril, Grayson, editor
Principles of guided missile design
D. Van Nostrand Company, 1958
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Timber design and construction handbook
Timber Engineering Company
F.W. Dodge Corp., 1956
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