Durand, Robert Y., author
Prentice-Hall, 1958
Buku Teks
Gerstenberg, Charles W., author
Prentice-Hall, 1959
Buku Teks
Gerstenberg, Charles W., author
Prentice-Hall, 1951
Buku Teks
Gerstenberg, Charles W., author
Prentice-Hall, 1956
Buku Teks
Robinson, Webster, author
McGraw-Hill, 1925
Buku Teks