Hastings Gerard. (2018). Social Marketing: Rebels with a Cause (3rd.). Routledge.
Lua i Stíl Chicago (17ú heag.)Hastings Gerard. Social Marketing: Rebels with a Cause. 3rd. Routledge, 2018.
Lua MLA (9ú heag.)Hastings Gerard. Social Marketing: Rebels with a Cause. 3rd. Routledge, 2018.
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