Gragera, A. (2002). L1 attrition and L2 acquisition of Spanish subjunctive: A functionalist approach (1. ed.). Universitas Castellae.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGragera, Antonio. L1 Attrition and L2 Acquisition of Spanish Subjunctive: A Functionalist Approach. 1. ed. Valladolid: Universitas Castellae, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGragera, Antonio. L1 Attrition and L2 Acquisition of Spanish Subjunctive: A Functionalist Approach. 1. ed. Universitas Castellae, 2002.
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