Παραπομπή σε μορφή APA (7η εκδ.)

Ortega Santacruz, T. E., & Chacón Quizhpe, H. (2014). Warm ups for business for the fourth course of the bilingual secretarial program of María Auxiliadora high school.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ortega Santacruz, Tania Elizabeth, και Humberto Chacón Quizhpe. Warm Ups for Business for the Fourth Course of the Bilingual Secretarial Program of María Auxiliadora High School. 2014.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ortega Santacruz, Tania Elizabeth, και Humberto Chacón Quizhpe. Warm Ups for Business for the Fourth Course of the Bilingual Secretarial Program of María Auxiliadora High School. 2014.