Thaler, George J.
New York: McGraw-Hill, 1955
Buku Teks
Bauer, Heinz, author
Academic Press, 1981
Buku Teks
Lamb, George L., author
John Wiley & Sons, 1980
Buku Teks
Butenin, N.V., author
Blaisdell, 1965
Buku Teks
Beckmann, Petr, author
Harcourt, Brace & World, 1967
Buku Teks