Não informado. (1956). Minnesota Studies in the Philosophy of Science. Minnesota Center of Philosophy of Science.
Chicago-referens (17:e uppl.)Não informado. Minnesota Studies in the Philosophy of Science. Minneapolis, Minn: Minnesota Center of Philosophy of Science, 1956.
MLA-referens (8:e uppl.)Não informado. Minnesota Studies in the Philosophy of Science. Minnesota Center of Philosophy of Science, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.