Chambers's biographical dictionary
MLA
Thorne, J. O. Chambers's Biographical Dictionary. Revised ed.; Edinburgh: W. & R. Chambers, 1968
APA, 7th edition
Thorne, J. O. (1968). Chambers's biographical dictionary. Revised ed.; Edinburgh: W. & R. Chambers
Chicago, 17th edition
Thorne, J. O. Chambers's biographical dictionary. Revised ed.; Edinburgh: W. & R. Chambers, 1968