International Congress of History of Science (18º. 1989. Munich y Hamburgo), Krafftand, F., & Scriba, C. (1989). XVIIIth International Congress of the History of Science. Hamburg : Munich: ICHS.
Cita MLA (8 ed.) (Copiar al portapapeles)International Congress of History of Science (18º. 1989. Munich y Hamburgo), Fritz Krafftand, and Christoph Scriba. XVIIIth International Congress of the History of Science. Hamburg : Munich: ICHS , 1989.