Cita APA (7a ed.)
Harrel, G. D. Marketing: Connecting with Customers. Pearson.
Cita estilo Chicago (17a ed.)
Harrel, Gilbert D. Marketing: Connecting with Customers. Upper Saddle River, EUA: Pearson.
Cita MLA (9a ed.)
Harrel, Gilbert D. Marketing: Connecting with Customers. Pearson.
Precaución: Estas citas no son 100% exactas.