Gilles, K. (2025). Understanding Digital Marketing: The principles of digital marketing explained simply and practically. Independently published.
Chicago-tyylinen lähdeviittausGilles, Kroeger. Understanding Digital Marketing: The Principles of Digital Marketing Explained Simply and Practically. Independently published, 2025.
MLA-viiteGilles, Kroeger. Understanding Digital Marketing: The Principles of Digital Marketing Explained Simply and Practically. Independently published, 2025.
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