Não informado. (1939). Advancement of Science. British Association for the Advancement of Science.
Chicago-Zitierstil (17. Ausg.)Não informado. Advancement of Science. London: British Association for the Advancement of Science, 1939.
MLA-Zitierstil (8. Ausg.)Não informado. Advancement of Science. British Association for the Advancement of Science, 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.