Krowinska, A., & Backhaus, C. (2023). Digital content marketing: Creating value in practice (First Edition.). United Notion.
Παραπομπή σε μορφή Chicago (17η εκδ.)Krowinska, Agata, και Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. New york: United Notion, 2023.
Παραπομπή σε μορφή MLA (9th εκδ.)Krowinska, Agata, και Christof Backhaus. Digital Content Marketing: Creating Value in Practice. First Edition. United Notion, 2023.