• Li, Lijun & Siemund, Peter (2021). From phasal polarity expression to aspectual marker – grammaticalization of already in Asian and African varieties of English. In The Expression of Phasal Polarity in African Languages, R. Kramer (ed). Berlin: De Gruyter Mouton, 515–544.
  • Siemund, Peter and Li, Ljun (2020). Multilingualism and Language Policy in Singapore. In Language Diversity in the Sinophone World – Historical Trajectories, Language Planning, and Multilingual Practices, H. Klöter & M. S. Saarela (eds). New York: Routledge, 205–228.
  • Siemund, Peter. & Li, Lijun (2017). Towards a diachronic reconstruction of Colloquial Singapore English. In Negation and Contact. With a special Focus on Singapore English, D. Ziegeler & Z. Bao (eds). Amsterdam: Benjamins, 11–32.