Phillips, Charles F.
University of North Carolina , 1963
Buku Teks
Knorr, K.E.
Stanford University Press, 1945
Buku Teks
editors, P. Schidrowthz, T.R. Dawson
W. Heffer and Sons, 1952
Buku Teks
Trisna Ulfatmi
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
Dinda Hasnasoraya
Fakultas Teknik Universitas Indonesia, 2019
UI - Skripsi (Membership)