Groves, E. (2009). The Constant Contact guide to email marketing (1st edition.). Wiley.
Cita Chicago Style (17a ed.)Groves, Eric. The Constant Contact Guide to Email Marketing. 1st edition. Hoboken, NJ: Wiley, 2009.
Cita MLA (9a ed.)Groves, Eric. The Constant Contact Guide to Email Marketing. 1st edition. Wiley, 2009.
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