APA (7th ed.) Citation

Palmer, T., Grainger, H., & Fitzner, G. (2005). Trade union membership 2004. London.

Chicago Style (17th ed.) Citation

Palmer, Tom, Heidi Grainger, and Grant Fitzner. Trade Union Membership 2004. London, 2005.

MLA (8th ed.) Citation

Palmer, Tom, et al. Trade Union Membership 2004. London, 2005.