APA
Gosney J., .Customer relationship management essentials / John W. Gosney, Thomas P. Boehm. Roseville, Calif: .
Chicago
Gosney John, .Customer relationship management essentials / John W. Gosney, Thomas P. Boehm. Roseville, Calif: .
Harvard
Gosney J., .Customer relationship management essentials / John W. Gosney, Thomas P. Boehm. Roseville, Calif: .
MLA
Gosney John, .Roseville, Calif: . .