Brause, Rita S.
Writing your doctoral dissertation: invisible rules for success
RoutledgeFalmer , 2000
 Buku Teks
Tague, Nancy R.
The quality toolbox
ASQ Quality Press, 2005
 Buku Teks
Hunt, William James
The C Toolbox
Addison-Wesley, 1985
 Buku Teks
Wells, H.G.
The invisible man
Gramedia Pusaka Utama, 2019
 Buku Teks
Chasen,Everett
The manager's communication toolbox
American Society for Training & Development, 2012
 eBooks