Fuller, G. D. N. Forest Trees of Illinois: How to Know Them.
Lua i Stíl Chicago (17ú heag.)Fuller, George D.; Nuuttila. Forest Trees of Illinois: How to Know Them.
Lua MLA (9ú heag.)Fuller, George D.; Nuuttila. Forest Trees of Illinois: How to Know Them.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.