2005 The aspectual system of Singapore English and the systemic substratist explanation. Journal of Linguistics41. 237–267. doi: 10.1017/S0022226705003269
2009 Revisiting English prosody: (Some) New Englishes as tone languages?The Typology of Asian Englishes, Special Issue, English World-Wide30(2). 218–239. doi: 10.1075/eww.30.2.06lim
2010 Migrants and ‘mother tongues’: Extralinguistic forces in the ecology of English in Singapore. In Lisa Lim , Anne Pakir & Lionel Wee (eds.), English in Singapore: Modernity and management, 19–54. (Asian Englishes Today.) Hong Kong: Hong Kong University Press. doi: 10.5790/hongkong/9789888028436.003.0002