Greenlaw, Paul S.
New York, N.Y. Harper & Row 1986,
Buku Teks
Greenlaw, Paul S.
Harper & Row, 1986
Buku Teks
Werther, William B., author
McGraw-Hill , 1989
Buku Teks
Crane, Donald P.
Kent publishing company, 1986
Buku Teks
Werther, William B., author
McGraw-Hill, 1986
Buku Teks