Lahiri, Kajal, author
Wiley India, 2009
Buku Teks
Theil, Henri, author
North-Holland, 1971
Buku Teks
Theil, Henri, author
Prentice-Hall, 1978
Buku Teks
Wooldridge, Jeffrey M., 1960-, author
South-Western College, 2000
Buku Teks
by George G. Judge [and others]
John Wiley & Sons, 1980
Buku Teks