Sering, T. A. (1976). Population education knowledge of the elementary school teachers.
Lua i Stíl Chicago (17ú heag.)Sering, Tomasita Arreza. Population Education Knowledge of the Elementary School Teachers. 1976.
Lua MLA (9ú heag.)Sering, Tomasita Arreza. Population Education Knowledge of the Elementary School Teachers. 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.