Aram, John D.
Pitman Pub. , 1986
Buku Teks
Thill, John V., author
McGraw-Hill, 1991
Buku Teks
Bovee, Courtland L., author
McGraw-Hill, 1993
Buku Teks
Bovee, Courtland L., author
McGraw-Hill, 1992
Buku Teks
Bovee, Courtland L., author
Pearson, 2014
Buku Teks