Kummer, C. (2003). The joy of coffee: The essential guide to buying, brewing, and enjoying (Rev. and updated.). Houghton Mifflin.
Chicago-Zitierstil (17. Ausg.)Kummer, Corby. The Joy of Coffee: The Essential Guide to Buying, Brewing, and Enjoying. Rev. and updated. Boston [u.a.]: Houghton Mifflin, 2003.
MLA-Zitierstil (9. Ausg.)Kummer, Corby. The Joy of Coffee: The Essential Guide to Buying, Brewing, and Enjoying. Rev. and updated. Houghton Mifflin, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.