1. The Alchemy of Culture: Intoxicants in Society;Rudgley,1993
2. Origin and History of Beer and Brewing: From Prehistoric Times to the Beginning of Brewing Science and Technology;Arnold,2005
3. World's Best Beers: One Thousand Craft Brews From Cask to Glass;McFarland,2009
4. Volume of World Beer Production;European Beer Guide,2006
5. The Barbarian's Beverage: A History of Beer in Ancient Europe;Nelson,2005