HOWARD , J. (1997). I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES.
Lua i Stíl Chicago (17ú heag.)HOWARD , JOHN. I CAN READ ABOUT FOSSILS. USA: TROLL ASSOCIATES, 1997.
Lua MLA (9ú heag.)HOWARD , JOHN. I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.