ALEXANDER, L. (1986). Question and answer graded oral comprehension exercises. Kanisius.
Lua i Stíl Chicago (17ú heag.)ALEXANDER, L.G. Question and Answer Graded Oral Comprehension Exercises. Kanisius, 1986.
Lua MLA (8ú heag.)ALEXANDER, L.G. Question and Answer Graded Oral Comprehension Exercises. Kanisius, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.