Hart, Michael H., author
Pustaka Jaya, 1985
Buku Referensi
Europe Publications Limited, 1984
Buku Referensi
Wallace, Robert, author
N.V. Het Parool, 1968
Buku Referensi
Stolpe, Sven
Charles Scribner's, 1966
Buku Teks
Buggy, Hugh
Widescope International, 1977
Buku Teks