Lua APA (7ú heag.)
Zhang, T. (2008). Elderly entrepreneurship in an aging US economy: It's never too late. World Scientific Pub..
Lua i Stíl Chicago (17ú heag.)
Zhang, Ting. Elderly Entrepreneurship in an Aging US Economy: It's Never Too Late. Singapore ; Hackensack, NJ: World Scientific Pub., 2008.
Lua MLA (9ú heag.)
Zhang, Ting. Elderly Entrepreneurship in an Aging US Economy: It's Never Too Late. World Scientific Pub., 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.