Van der Ziel, Aldert, 1910-
Prentice-Hall, 1959
Buku Teks
Van der Ziel, Aldert, 1910-
Prentice-Hall, 1957
Buku Teks
Wang, Franklin F.Y., author
North-Holland, 1980
Buku Teks
Havill, R.L., author
Macmillan, 1975
Buku Teks
Barber, Alfred W., author
Parker Publishing Company, Inc., 1980
Buku Referensi