Buchheim, Robert W., author
Random House, 1959
Buku Referensi
John Hancock Callender, editor-in-chief
McGraw-Hill, 1974
Buku Referensi
edited by John Hancock Callender
McGraw-Hill, 1966
Buku Referensi
Kingston, John, author
Longman ; York Press, 1992
Buku Referensi
Wilson, Frank W., editor-in-cheif
McGraw-Hill, 1963
Buku Referensi