APA (7th ed.) Citation

Hughes, M., Carlsen, J., & Crilley, G. (2009). Towards a good practice user pays system for Australian protected areas. Promaco.

Chicago Style (17th ed.) Citation

Hughes, Michael, Jack Carlsen, and G. Crilley. Towards a Good Practice User Pays System for Australian Protected Areas. Promaco, 2009.

MLA (9th ed.) Citation

Hughes, Michael, et al. Towards a Good Practice User Pays System for Australian Protected Areas. Promaco, 2009.