APA (7th ed.) Citation

Hallmark. (1969). The Hallmark guide to beautiful packages. Hallmark.

Chicago Style (17th ed.) Citation

Hallmark. The Hallmark Guide to Beautiful Packages. New York, NY: Hallmark, 1969.

MLA (9th ed.) Citation

Hallmark. The Hallmark Guide to Beautiful Packages. Hallmark, 1969.

Warning: These citations may not always be 100% accurate.