Grant, Douglas
Grove Press, 1962
Buku Teks SO
Kusuma Nursiawati
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1988
UI - Skripsi Membership
Twain, Mark, 1835-1910
A Wilco Book, 2010
Buku Teks SO
NY. Harper & Brothers
Buku Teks
edited with a commerntary by Lewis G. Leary
Columbia University Press, 1961
Buku Teks SO