The Harvard classics: volume 20, the divine comedy of Dante Alighieri
editor, Charles W. Eliot
Grolier Enterprises Corp, 1995
 Buku Teks
The Harvard classics : volume 20, the divine comedy of Dante Alighieri
Charles W. Eliot, edited
P. F. Collier & Son Corporation, 1969
 Buku Referensi
The harvarvard classics: the divine comedy of dante alighieri
edited by Charles W. Eliot dan Henry F. Cary
Grolier Enterprises Corp., 1995
 Buku Referensi
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