APA (7th ed.) Zitazioa
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.) Zitazioa
Crescent Books, Richard West, eta Robin Ellis. The Whole World Stamp Catalog: Current Stamps and Postal Items from over 200 Countries and Where to Buy Them.
MLA (9th ed.) Zitazioa
Crescent Books, et al. The Whole World Stamp Catalog: Current Stamps and Postal Items from over 200 Countries and Where to Buy Them.
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