Pairoj Kunanupatham และ Nattama Pongpairoj. (2017) L2 ACQUISITION OF WH-OPERATOR MOVEMENT IN ENGLISH OPEN INTERROGATIVES BY L1 THAI LEARNERS: A CASE OF THE FAILED FUNCTIONAL FEATURES HYPOTHESIS. Chulalongkorn University:ม.ป.ท.Pairoj Kunanupatham และ Nattama Pongpairoj. 2017. L2 ACQUISITION OF WH-OPERATOR MOVEMENT IN ENGLISH OPEN INTERROGATIVES BY L1 THAI LEARNERS: A CASE OF THE FAILED FUNCTIONAL FEATURES HYPOTHESIS. ม.ป.ท.:Chulalongkorn University;Pairoj Kunanupatham และ Nattama Pongpairoj. L2 ACQUISITION OF WH-OPERATOR MOVEMENT IN ENGLISH OPEN INTERROGATIVES BY L1 THAI LEARNERS: A CASE OF THE FAILED FUNCTIONAL FEATURES HYPOTHESIS. ม.ป.ท.:Chulalongkorn University, 2017. Print.