Keller, Kerrie (2013-01-05). „Addressing a Former President of the United States”. The Emily Post Institute. Архивирано из оригинала 24. 09. 2015. г. Приступљено 2013-01-05. „When addressing a former President of the United States in a formal setting, the correct form is "Mr. LastName". ("President LastName" or "Mr. President" are terms reserved for the current head of state.)”
formsofaddress.info
Hickey, Robert. „Is a Former President Addressed as President (name)?”. Honor & Respect – The Official Guide to Names, Titles, and Forms of Address. Protocol School of Washington. Приступљено 5. 1. 2013.CS1 одржавање: Формат датума (веза)
Martin, Judith (21. 10. 1992). „Addressing a Former President”. The Washington Post. Архивирано из оригинала 10. 6. 2014. г. Приступљено 5. 1. 2013.CS1 одржавање: Формат датума (веза)
Martin, Judith (21. 1. 2009). „Miss Manners by Judith Martin”. The Washington Post. Приступљено 18. 5. 2019.CS1 одржавање: Формат датума (веза)
web.archive.org
Martin, Judith (21. 10. 1992). „Addressing a Former President”. The Washington Post. Архивирано из оригинала 10. 6. 2014. г. Приступљено 5. 1. 2013.CS1 одржавање: Формат датума (веза)
Keller, Kerrie (2013-01-05). „Addressing a Former President of the United States”. The Emily Post Institute. Архивирано из оригинала 24. 09. 2015. г. Приступљено 2013-01-05. „When addressing a former President of the United States in a formal setting, the correct form is "Mr. LastName". ("President LastName" or "Mr. President" are terms reserved for the current head of state.)”