Boobs-Merrill, 1963
Buku Teks
Salvadori, Massimo, author
Bobbs-Merrill, 1963
Buku Teks
Berle, Adolf A., Jr., author
Harcourt, Brace, 1959
Buku Teks
Crane, Burton
Harcourt, Brace and Company, 1956
Buku Teks
Schiller, Bradley R., author
Prentica-Hall , 1975
Buku Teks