Science World (Teacher's Edition). Scholastic Incorporated.
Lua i Stíl Chicago (17ú heag.)Science World (Teacher's Edition). Scholastic Incorporated.
Lua MLA (9ú heag.)Science World (Teacher's Edition). Scholastic Incorporated.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.