@book{Luescher, author = {Luescher, M.}, title = {The L{\"u}scher colour test, London (Pan Books Ltd.) 1971.}, language = {en} } @book{Luescher, author = {Luescher, M.}, title = {Signale der Pers{\"o}nlichkeit. Rollen-Spiele und ihre Motive, Stuttgart (Deutsche Verlags-Anstalt) 1974.}, language = {de} }