Lua APA (7ú heag.)
Koester, E. (2011). Green entrepreneur handbook: The guide to building and growing a green and clean business. CRC Press LLC.
Lua i Stíl Chicago (17ú heag.)
Koester, Eric. Green Entrepreneur Handbook: The Guide to Building and Growing a Green and Clean Business. Boca Raton, FL: CRC Press LLC, 2011.
Lua MLA (9ú heag.)
Koester, Eric. Green Entrepreneur Handbook: The Guide to Building and Growing a Green and Clean Business. CRC Press LLC, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.