Nemchinov, V. S
Oliver & Boyd 1964, 1964
Buku Teks
Bruton, Henry J.
Prentice-Hall, 1965
Buku Teks
Mennes, L.B.M.
North-Holland Publishing, 1969
Buku Teks
Adelman, Irma
Stanford University Press, 1961
Buku Teks
Bryce, Murray D.
The McGraw-Hill Book Company, 1960
Buku Teks