Sullican, G. (2018). Retirement fail: The 9 reasons people flunk post work life.. John Wiley & Sons.
Citazione stile Chigago Style (17a edizione)Sullican, Greg. Retirement Fail: The 9 Reasons People Flunk Post Work Life.. New Jersey: John Wiley & Sons, 2018.
Citatione MLA (9a ed.)Sullican, Greg. Retirement Fail: The 9 Reasons People Flunk Post Work Life.. John Wiley & Sons, 2018.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.