APA-Zitierstil (7. Ausg.)

Caldera, L. H. (1976). Proposed methods in the teaching of Spanish in secondary schools and colleges in the Bicol Region [microform]. Photoduplication Service. University of the Philippines Library.

Chicago-Zitierstil (17. Ausg.)

Caldera, Leticia H. Proposed Methods in the Teaching of Spanish in Secondary Schools and Colleges in the Bicol Region [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.

MLA-Zitierstil (9. Ausg.)

Caldera, Leticia H. Proposed Methods in the Teaching of Spanish in Secondary Schools and Colleges in the Bicol Region [microform]. Photoduplication Service. University of the Philippines Library, 1976.