Transactions of the seventh International congress of hygiene and demography ...
APA Citation
International congress of hygiene and demography. 7th, L., Shelly, C. Edward. (189293). Transactions of the seventh International congress of hygiene and demography ... London: Printed by Eyre and Spottiswoode.
MLA Citation
International congress of hygiene and demography. 7th, London, 1891, and Charles Edward Shelly. Transactions of the Seventh International Congress of Hygiene And Demography ... London: Printed by Eyre and Spottiswoode, 189293.
Warning: These citations may not always be complete (especially for serials).