Leithod, Louis
ARMICO, 1982
Buku Teks
Morrey, Charles B., author
Addison-Wesley, 1962
Buku Teks
Randolph, John F., author
Wadsworth, 1965
Buku Teks
Johnson, Richard E., author
Allyn and Bacon, 1968
Buku Teks
Stein, Sherman K., author
McGraw-Hill, 1982
Buku Teks