Sears, Francis W. (Francis Weston), 1898-1975, author
Addison-Wesley, 1960
Buku Teks
Boolootian, Richard A., author
New York: Macmillan, 1969
Buku Teks
Beckenbach, Edwin F., author
Wadsworth, 1968
Buku Teks
Weber, Robert L., author
McGraw-Hill, 1959
Buku Teks
Fuller, Harry J., author
Holt Rinehart and Winston, 1963
Buku Teks