APA
Einstein Albert, Klein Martin J Tr, Przibram K Ed & Schroedinger Erwin. (1967). Letter on wave mechanics. New York: Vision.
Chicago
Einstein Albert, Klein Martin J Tr, Przibram K Ed and Schroedinger Erwin. 1967. Letter on wave mechanics. New York: Vision.
Harvard
Einstein Albert, Klein Martin J Tr, Przibram K Ed and Schroedinger Erwin. (1967). Letter on wave mechanics. New York: Vision.
MLA
Einstein Albert, Klein Martin J Tr, Przibram K Ed and Schroedinger Erwin. Letter on wave mechanics. New York: Vision. 1967.