Patricia A. Duff

Teaching and learning English grammar : research findings and future directions

MaryAnn Christison, Donna Christian, Nina Spada, 2015 .

Corpus-Based Lexicogrammatical Approach to Grammar Instruction: Its Use and Effects in EFL and ESL Contexts

MaryAnn Christison, Donna Christian, Nina Spada, 2015 .

Case Study Research in Applied Linguistics

Patricia A. Duff, 2007 .

14. The acquisition and use of perfective aspect in Mandarin

Patricia A. Duff, Duanduan Li, Patricia A. Duff, 2002 .