written by M. C. Barnes [and others]
Allen & Unwin, 1970
Buku Teks
Mund, Vernon A., author
Appleton-Century-Crofts, 1971
Buku Teks
Amrine, Harold T., author
Prentice-Hall, 1971
Buku Teks
Wei Choo, Chun
Oxford university press, 1998
Buku Teks
Brown, Alvin
Hibbert Printing Company, 1945
Buku Teks