Cita APA (7th ed.)

Geueke Birgit & Canal Food Packaging Forum / YouTube. Food Packaging Forum.

Cita Chicago (17th ed.)

Geueke Birgit i Canal Food Packaging Forum / YouTube. Food Packaging Forum.

Cita MLA (9th ed.)

Geueke Birgit i Canal Food Packaging Forum / YouTube. Food Packaging Forum.

Atenció: Aquestes cites poden no estar 100% correctes.