APA (7th ed.) Citation

Welsh, W. J. (1970). The Processing Department of the Library of Congress in 1969.

Chicago Style (17th ed.) Citation

Welsh, William J. The Processing Department of the Library of Congress in 1969. 1970.

MLA (9th ed.) Citation

Welsh, William J. The Processing Department of the Library of Congress in 1969. 1970.

Warning: These citations may not always be 100% accurate.