APA (7th ed.) Citation

Brown, J. D., & Lock, R. N. (1961). James Duff Brown's manual of library economy (7th ed.). Grafton.

Chicago Style (17th ed.) Citation

Brown, James Duff, and R. Northwood Lock. James Duff Brown's Manual of Library Economy. 7th ed. London: Grafton, 1961.

MLA (8th ed.) Citation

Brown, James Duff, and R. Northwood Lock. James Duff Brown's Manual of Library Economy. 7th ed. Grafton, 1961.