*Bohon, Dave (September 2, 2016). [https://www.thenewamerican.com/usnews/politics/item/26826-obama-most-expensive-ex-president-ever Obama Most Expensive Ex-President Ever]. ''The New American''. Retrieved September 2, 2017.</ref> | *Bohon, Dave (September 2, 2016). [https://www.thenewamerican.com/usnews/politics/item/26826-obama-most-expensive-ex-president-ever Obama Most Expensive Ex-President Ever]. ''The New American''. Retrieved September 2, 2017.</ref> |