Παραπομπή σε μορφή APA (7η εκδ.)

Gragera, A. (2002). L1 attrition and L2 acquisition of Spanish subjunctive: A functionalist approach (1. ed.). Universitas Castellae.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gragera, Antonio. L1 Attrition and L2 Acquisition of Spanish Subjunctive: A Functionalist Approach. 1. ed. Valladolid: Universitas Castellae, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gragera, Antonio. L1 Attrition and L2 Acquisition of Spanish Subjunctive: A Functionalist Approach. 1. ed. Universitas Castellae, 2002.