Sawyer, R. (1986). Slavery in the twentieth century. Routledge & Kegan Paul.
Chicago Style (17th ed.) CitationSawyer, Roger. Slavery in the Twentieth Century. London [u.a.]: Routledge & Kegan Paul, 1986.
MLA (8th ed.) CitationSawyer, Roger. Slavery in the Twentieth Century. Routledge & Kegan Paul, 1986.
Warning: These citations may not always be 100% accurate.