Furgal, J., & Furgal, H. (1973). Unite: Grade 4 parent handbook. Benziger.
Lua i Stíl Chicago (17ú heag.)Furgal, Jean, agus Henry Furgal. Unite: Grade 4 Parent Handbook. Beverly Hills, Calif.: Benziger, 1973.
Lua MLA (8ú heag.)Furgal, Jean, agus Henry Furgal. Unite: Grade 4 Parent Handbook. Benziger, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.