Não informado. (1939). Advancement of Science. British Association for the Advancement of Science.
Chicago-viite (17. p.)Não informado. Advancement of Science. London: British Association for the Advancement of Science, 1939.
MLA-viite (8. p.)Não informado. Advancement of Science. British Association for the Advancement of Science, 1939.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.