APA (7th ed.) Citation

Roberts, B. C. (1958). The Trades Union Congress, 1868-1921. Allen and Unwin.

Chicago Style (17th ed.) Citation

Roberts, B. C. The Trades Union Congress, 1868-1921. London: Allen and Unwin, 1958.

MLA (8th ed.) Citation

Roberts, B. C. The Trades Union Congress, 1868-1921. Allen and Unwin, 1958.

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