Callanta, N. M., & Castro, P. E. (1969). The effectiveness of the PRRM method of training auxiliary literacy teachers. [publisher not identified].
Lua i Stíl Chicago (17ú heag.)Callanta, Norma M., agus Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [place of publication not identified]: [publisher not identified], 1969.
Lua MLA (9ú heag.)Callanta, Norma M., agus Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [publisher not identified], 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.