Book excerpt: This collection sheds light on the ways in which corpus linguistics and the use of learner corpora might be applied to the study of academic discourse, revealing linguistic and rhetorical patterns and insights into variation across a range of disciplinary genres. Organized into three sections, the book highlights key tools and methodologies in corpus analysis to study such features as discourse markers, lexical bundles, linguistic complexity, lexico-grammatical conventions, and modality in case studies in studies of academic discourse, both in a second language and in English for specific purposes. The volume features examples from disciplinary genres not often covered in the existing literature, including MA theses, academic book reviews, and online student forums. Taken together with the study of learner corpora, the book demonstrates the impact of corpus linguistic tools in better understanding linguistic patterns of specific languages and language use and in turn, their role in helping to identify the needs of language learners. The book will be of interest to students and scholars in corpus linguistics, applied linguistics, and English for Specific Purposes.