Baumol, William J., author
Prentice-Hall, 1979
Buku Teks
Filomena Maggino
Springer, 2012
eBooks
Alexander M.J. Saudale ... [and others]
2002
Artikel Jurnal
Lehner, Robert N., author
Prentice-Hall, 1982
Buku Teks
Lehrer, Robert N., author
Prentice-Hall, 1982
Buku Teks