Cita APA (7th ed.)

Callanta, N. M., & Castro, P. E. (1969). The effectiveness of the PRRM method of training auxiliary literacy teachers. [publisher not identified].

Cita Chicago (17th ed.)

Callanta, Norma M., i Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [place of publication not identified]: [publisher not identified], 1969.

Cita MLA (9th ed.)

Callanta, Norma M., i Perla E. Castro. The Effectiveness of the PRRM Method of Training Auxiliary Literacy Teachers. [publisher not identified], 1969.