Callanta, N. M., & Castro, P. E. (1969). The effectiveness of the PRRM method of training auxiliary literacy teachers. [publisher not identified].
Chicago-referens (17:e uppl.)Callanta, Norma M., och Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [place of publication not identified]: [publisher not identified], 1969.
MLA-referens (9:e uppl.)Callanta, Norma M., och Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [publisher not identified], 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.