Lua APA (7ú heag.)
Hargreaves, R. (2012). How to become a business angel: Practical advice for aspiring investors in unquoted companies. Harriman House Ltd..
Lua i Stíl Chicago (17ú heag.)
Hargreaves, Richard. How to Become a Business Angel: Practical Advice for Aspiring Investors in Unquoted Companies. Hampshire: Harriman House Ltd., 2012.
Lua MLA (9ú heag.)
Hargreaves, Richard. How to Become a Business Angel: Practical Advice for Aspiring Investors in Unquoted Companies. Harriman House Ltd., 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.