English | hardback | 168 p. | 2019
English | paperback | 256 p. | 2013
German | paperback | 224 p. | 2012
German | paperback | 188 p. | 2012
German | paperback | 209 p. | 2012
German | paperback | 182 p. | 2017
German | paperback | 214 p. | 2012