Ray; Coffman, Antonia , 编. The Simpsons: A Complete Guide to Our Favorite Family. Created by Matt Groening; edited by Ray Richmond and Antonia Coffman. 1st
ISBN 0-89608-738-7 Coffman, Tom (2003). Nation Within: The Story of America's Annexation of the Nation of Hawaii. Epicenter. ISBN 1-892122-00-6 Coffman, Tom (2003)
(原始内容存档于2014-06-27). Johnson, Thomas M.; Pratt, Fletcher. The Lost Battalion. Edward M. Coffman. University of Nebraska Press. 2000: 228 [2012-08-26]. ISBN 9780803276130