Division of Research, Graduate School of Business Administration, Harvard University, 1972
Buku Teks
consulting editor, Edward Smerdon
Globe Law and Business , 2011
Buku Referensi
Rosen, Paul L.
University of Illinois Press, 1972
Buku Teks
Fliehman, Deborah G.
ASQC Quality Press, 1994
Buku Teks
Cambridge University Press, 2005
Buku Teks