Strauss, J., & Frost, R. (2012). E - Marketing (6th ed.). PHI Learning Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Strauss, Judy, agus Raymond Frost. E - Marketing. 6th ed. New Delhi: PHI Learning Pvt. Ltd, 2012.
Lua MLA (9ú heag.)Strauss, Judy, agus Raymond Frost. E - Marketing. 6th ed. PHI Learning Pvt. Ltd, 2012.
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