The Harvard classics: volume 12, Plutarch's lives
P. F. Collier & Son Corporation, 1959
 Buku Teks
The Harvard classics: volume 12, Plutarch's lives
edi ted by Charles W. Eliot
P. F. Collier & Son Corporation, 1959 ; 1969
 Buku Teks
Muhammad Iqbal Ramadhan
Study case: Delta/signal corporation business strategy (Harvard Business School) = Strategi bisnis Delta/Signal korporasi
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2019
 UI - Makalah dan Kertas Kerja
Coelho, Paulo
Als een rivier : gedachten en impressies, 1998-2005
Uitgeverij De Arbeiderspers, 2006
 Buku Teks
Nonlinear modeling and forecasting : proceedings of the Workshop on nonlinear modeling and forecasting, held September, 1990 in Santa Fe, New Mexico; Vol. 12
edited by Martin Casdagli and Stephen Eubank
Addison-Wesley , 1992
 Buku Teks SO