Dungo, D. T. (1962). Learning English as a second language: A worktext of essentials, grade I-[VI]. Phoenix.
Lua i Stíl Chicago (17ú heag.)Dungo, Dolores T. Learning English as a Second Language: A Worktext of Essentials, Grade I-[VI]. [Quezon City]: Phoenix, 1962.
Lua MLA (9ú heag.)Dungo, Dolores T. Learning English as a Second Language: A Worktext of Essentials, Grade I-[VI]. Phoenix, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.