by David Besanko [and others]
John Wiley & Sons, 2004
Buku Teks
Ferrell, O.C.
Thomson South-Western, 2008
Buku Teks SO
Grobstein, Clifford
W.H. Freeman, 1965
Buku Teks
Stillman, Richard N.
Holt, Rinehart and Wilson, 1962
Buku Teks
Kennedy, John F. (John Fitzgerald), 1917-1963
Harper & Brothers, 1960
Buku Teks SO