To take this class you must be a paid member fo the BJCP Study Sessions Class. See this discussion for more details:
CLASS 11: SOURS, FRUIT BEERS, SPICE BEERS, CHRISMAS BEERS, AND SPECIALITY BEERS – BJCP Categories 17, 20, 21, and 23. Class consists of discussion of history, ingredients, brewing process and characteristics of each style as well as sampling of examples.
1. Strong, Gordon et al (2008). BJCP Style Guidelines. Categories (17, 20, 21, and 23). Retrieved from http://www.bjcp.org/stylecenter.php