Grebe, Sarah C. (1985). "Co-Mediation: Pros and Cons". In Hansen, James C.; Grebe, Sarah Childs (eds.). Divorce and Family Mediation. Volume 12 of Family therapy collections, ISSN 0735-9152. Rockville, Maryland: Aspen Systems Corporation. p. 75. ISBN0894436112. Retrieved 6 January 2021. Co-mediation provides mediators with a system of checks and balances.