Cassirer, E. (1953). Substance and function and Einstein's theory of relativity. New York: Dover Publications.
Παραπομπή Chicago StyleCassirer, Ernst. Substance and Function and Einstein's Theory of Relativity. New York: Dover Publications, 1953.
Παραπομπή MLACassirer, Ernst. Substance and Function and Einstein's Theory of Relativity. New York: Dover Publications, 1953.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.