Fusilier, H. Lee
Prentice-Hall, 1971
Buku Teks
Asch, Peter
John Wiley & Sons, 1983
Buku Teks
Purdy, Harry Leslie, author
Prentice-Hall, 1942
Buku Teks
by Edwin Mansfield [and others]
Macmillan, 1971
Buku Teks
Beal, Edwin F., author
Richard D. Irwin, 1972
Buku Teks