Grolier Enterprises Corp., 1995
Buku Referensi
P. F. Collier & Son Corporation, 1959 ; 1969
Buku Teks SO
Grolier Enterprises Corp, 1995
Buku Teks SO
Burmalia
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1980
UI - Skripsi Membership
Cervantes Saavedra, Miguel de, 1547-1616
Everyman's Library : Distributed by the Random Century Group, c1991
Buku Teks SO