Kandinsky's writings:
Wassily Kandinsky: Complete Writings on Art (Lindsay & Vergo)
Essential books about Kandinsky:
C.V. Poling: Kandinsky - Russian and Bauhaus Years
Peg Weiss: Kandinsky in Munich - The Formative Jugendstil Years
Michel Henry: Seeing the Invisible - On Kandinsky
Nina Kandinsky: Kandinsky et moi
W. Grohmann: Wassily Kandinsky - Leben und Werk
C.V. Poling: Kandinsky’s Teaching at the Bauhaus
Fondation Pierre Gianadda - Kandinsky et la Russie
Centre Pompidou - Kandinsky
P. Overy: Kandinsky - The Language of the Eye
P.A. Riedl - Wassily Kandinsky in Selbstzeugnissen und Bilddokumenten
John E. Bowlt and Rose-Carol Washton Long: The Life of Vasilii Kandinsky in Russian art - A study of "On the spiritual in art" by Vassily Kandinsky