Davis, Robert H., author
McGrow-Hill Book, 1974
Buku Teks
Davis, Robert H.
McGraw-Hill, 1974
Buku Teks
Artikel Jurnal
Dickinson, Leslie, author
Cambridge University Press , 1987
Buku Teks
Driscoll, Marcy P, author
Pearson Allyn and Bacon, 2005
Buku Teks