Baumol, William J., author
Harper & Brother Publisher, 1954
Buku Teks
Hansen, Alvin H. (Alvin Harvey), 1887-1975, author
McGraw-Hill, 1947
Buku Teks
edited by J.P. Nieuwenhuysen and P.J. Drake
Melbourne Unversity Press, 1977
Buku Teks
Bicanic, Rudolf
Mouton, 1967
Buku Teks
Nemchinov, V. S.
Oliver & Boyd, 1964
Buku Klasik