introduction by Edward G. Smith
Barnes & Noble, 1966
Buku Teks SO
Antieau, Chester James
Dennis & Co., 1960
Buku Teks SO
Antieau, Chester James
Dennis & Co., 1960
Buku Teks SO
Hamilton, Alexander
Tudor Publishing, 1937
Buku Teks
United States Information Agency, 1987
Buku Teks