Weston, John Fred, 1916-, author
Prentice-Hall, 1966
Buku Teks
Dauten, Carl Anton, 1913-, author
Prentice-Hall, 1948
Buku Teks
Mcdermott, Richard T., author
Lexing Publishing, 2000
Buku Teks
Hunt, Pearson, author
Richard D. Irwin, 1951
Buku Teks
edited by Harold M. Groves
Henry Holt Company , 1950
Buku Teks