Wooldridge, Jeffrey M., 1960-
South-Western College, 2000
Buku Teks SO
Wooldridge, Jeffrey M., 1960-
South-Western College, 2000
Buku Teks SO
Ramanathan, Ramu
Orlandno Harcourt Brace Jovanovich College, 1992
Buku Teks SO
Greene, William H., 1951-
Pearson Education, 2003
Buku Teks SO
Greene, William H., 1951-
Pearson Prentice-Hall, 2008
Buku Teks SO