Renner, John W., author
Harper & Row, 1968
Buku Teks
Ian Thomson, editor
McGraw-Hill Education, 2010
Buku Teks
Weinberg, Meyer, author
Prentice-Hall, 1959
Buku Teks
Robinson, James T.
Wadsworth, 1968
Buku Teks
Friedl, Alfred E, author
McGraw-Hill, 2001
Buku Teks