Tollefson, C., Haley, D., & Gale, F. P. (2008). Setting the standard: Certification, governance and the Forest Stewardship Council. UBC Press.
Lua i Stíl Chicago (17ú heag.)Tollefson, Chris, David Haley, agus Fred P. Gale. Setting the Standard: Certification, Governance and the Forest Stewardship Council. Vancouver: UBC Press, 2008.
Lua MLA (9ú heag.)Tollefson, Chris, et al. Setting the Standard: Certification, Governance and the Forest Stewardship Council. UBC Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.