Krowinska, A., & Backhaus, C. (2023). Digital content marketing: Creating value in practice (First Edition.). United Notion.
Čikaški stil citiranja (17. izdanje)Krowinska, Agata, i Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. New york: United Notion, 2023.
MLA način citiranja (9. izdanje)Krowinska, Agata, i Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. United Notion, 2023.