Stonier, Alfred W.
Longman Group Limited, 1980
Buku Teks
Stonier, Alfred W.
Ghallia Indonesia, 1984
Buku Teks
Dewett, Kewal Krishan
Premier Publishing Co. , 1969
Buku Teks
edited by Robert D. Dean, William H. Leahy, and David L. McKee
Free Press, 1970
Buku Teks
Downs, Anthony, author
Harper and Row, 1975
Buku Teks