Krowinska, A., & Backhaus, C. (2023). Digital content marketing: Creating value in practice (First Edition.). United Notion.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKrowinska, Agata, और Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. New york: United Notion, 2023.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKrowinska, Agata, और Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. United Notion, 2023.