Sullican, G. (2018). Retirement fail: The 9 reasons people flunk post work life.. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Sullican, Greg. Retirement Fail: The 9 Reasons People Flunk Post Work Life.. New Jersey: John Wiley & Sons, 2018.
Lua MLA (9ú heag.)Sullican, Greg. Retirement Fail: The 9 Reasons People Flunk Post Work Life.. John Wiley & Sons, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.