Michele Gazzola is Lecturer in Public Policy and Administration at the School of Applied Social and Policy Sciences at Ulster University, UK. Federico Gobbo is Full Professor on the Special Chair of Interlinguistics and Esperanto by special appointment at the University of Amsterdam, the Netherlands.David Cassels Johnson is Associate Professor of Multilingual Education at the University of Iowa, USA, and Visiting Professor in the Center for Language Planning and Policy Studies at Shanghai International Studies University, China.Jorge Antonio Leoni de León is a Full Professor of Computational Linguistics at the School of Philology, Linguistics and Literature, University of Costa Rica in San José and director of the Institute of Linguistic Research (INIL).

“The book is a recent addition to the literature on language policy and planning (LPP), encapsulating diverse academic perspectives offered in this rich field of inquiry while highlighting contemporary LPP concerns and themes.  … The reader will find the transdisciplinary approach defended in the book fruitful for advancing their knowledge of LPP. Overall, the book is an important contribution to guiding research and practice attempts to address LPP challenges by contextualising the attempts within informed epistemological and theoretical foundations.” (Hossein Davari and Saeed Nourzadeh, Current Issues in Language Planning, May 14, 2024)“The book makes a significant contribution to the field of LPP, with valuable insights and roadmaps for further research. It will certainly heighten the awareness of both newcomers to the field and policy-makers.” (Weiping Wu, Journal of Multilingual and Multicultural Development, August 28, 2023)

• Chapter 1. Epistemological and Theoretical Foundations in Language Policy and Planning: Introduction.- Chapter 2. Critical empirical approaches in language policy and planning.- Chapter 3. Language Policy as Public Policy.- Chapter 4. Corpus at the core: The epistemology of language planning.- Chapter 5. The relationship between Language Policy and Planning, Theoretical Linguistics and Natural Language Processing.- Chapter 6. Conclusions.