Springer Cham, 2019
eBooks
McGraw-Hill, 2001
Multimedia
edited by Jukka P. Matinlinna
Pan Stanford, 2014
Buku Teks
SBP Board of Consultants & Engineers
Small Business Publications, [199?]
Buku Referensi
Baumeister, Theodore
McGraw-Hill, 1958
Buku Referensi