APA (7th ed.) Citation

Roberts, B. C. (1971). Trade Unions-the challenge before them.

Chicago Style (17th ed.) Citation

Roberts, B C. Trade Unions-the Challenge Before Them. 1971.

MLA (9th ed.) Citation

Roberts, B C. Trade Unions-the Challenge Before Them. 1971.

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