Willard, Hobart H. (Hobart Hurd), 1881-1974, author
D. Van Nostrand, 1956
Buku Teks
Blaedel, W.J., author
Harper & Row, 1963
Buku Teks
Bishop, Yvonne M.M., author
MIT Press, 1975
Buku Teks
Gee, James Paul, author
Routledge, 2006
Buku Teks
Baumol, William J., author
Prentice-Hall, 1972
Buku Teks