Brinkley, Alan, author
McGraw-Hill, 1997
Buku Referensi
Bailey, Thomas Andrew, 1902-1983, author
D.C. Heath, 1987
Buku Referensi
Bailey, Thomas Andrew, 1902-1983, author
D.C. Heath, 1987
Buku Referensi
Howe, Hartley Edward
Facts on file, 1987
Buku Teks
Andrews, Wayne
Macmillan, 1978
Buku Teks