Kuratko, Donald F.
South-Western Cengage Learning, 2014
Buku Teks
Nielsen, Suna Lowe
Edward Elgar, 2012
Buku Teks
Helen L. Van Hoozer [and others]
Appleton Century Crofts, 1987
Buku Teks
Wilson, Margo
Prentice-Hall, 1985
Buku Teks
Berlo, David K.
Holt, Rinehart and Winston, 1960
Buku Teks