MLA

Welsh, R, and J.M Joosten. Two Mondrian Sketchbooks,1912 - 1914. Amsterdam: Meulenhoff International, 1969.

APA

Welsh, R., & Joosten, J. (1969). Two Mondrian sketchbooks,1912 - 1914. Amsterdam: Meulenhoff International.

Chicago

Welsh, R., and J.M Joosten. Two Mondrian Sketchbooks,1912 - 1914. Amsterdam: Meulenhoff International, 1969.