Berry, D. (1981). Industrial marketing for results. Addison-Wesley.
Cita Chicago (17th ed.)Berry, Dick. Industrial Marketing for Results. Reading: Addison-Wesley, 1981.
Cita MLA (9th ed.)Berry, Dick. Industrial Marketing for Results. Addison-Wesley, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.