@book{49107,
	author = {Richard W. Bulliet, Steven W. Hirsch, Lyman L. Johnson, Pamela Kyle Crossley, Daniel R. Headrick, David Northrup},
	title = {The earth and its people: a global history volume 11: since 15500},
	publisher = {Cengage learning},
	year = {2019},
	address = {Boston},
	edition = {c.1}
}