APA (7th ed.) Citation

Wright, R. R. (1969). The Negro in Pennsylvania: A study in economic history. Arno Press.

Chicago Style (17th ed.) Citation

Wright, Richard R. The Negro in Pennsylvania: A Study in Economic History. New York: Arno Press, 1969.

MLA (8th ed.) Citation

Wright, Richard R. The Negro in Pennsylvania: A Study in Economic History. Arno Press, 1969.