APA (7th ed.) Citation
Crescent Books, West, R., & Ellis, R. The Whole World Stamp Catalog: Current stamps and postal items from over 200 countries and where to buy them.
Chicago Style (17th ed.) Citation
Crescent Books, Richard West, and Robin Ellis. The Whole World Stamp Catalog: Current Stamps and Postal Items from over 200 Countries and Where to Buy Them.
MLA (9th ed.) Citation
Crescent Books, et al. The Whole World Stamp Catalog: Current Stamps and Postal Items from over 200 Countries and Where to Buy Them.
Warning: These citations may not always be 100% accurate.