Cita APA (7a ed.)

Opie, R. (1989). Packaging source book: A visual guide to a century of packaging design. Chartwell.

Cita Chicago Style (17a ed.)

Opie, Robert. Packaging Source Book: A Visual Guide to a Century of Packaging Design. New Jersey: Chartwell, 1989.

Cita MLA (9a ed.)

Opie, Robert. Packaging Source Book: A Visual Guide to a Century of Packaging Design. Chartwell, 1989.