Pinkney, Robert, author
Open University Press, 1993
Buku Teks
Raghavan, Srinath, author
Basic Books, a member of the Perseus Books Group, 2016
Buku Teks
Dobbs-Higginson, Michael S., author
Longman, 1993
Buku Teks
Yayasan Proklamasi, [date of publication not identified]
Buku Teks
Rosecrance, Richard, author
Gramedia Pustaka Utama , 1991
Buku Teks