1. BNC = Davies, Mark. 2004. British National Corpus (from Oxford University Press). https://www.english-corpora.org/bnc/ (15 September, 2020).
2. GloWbE = Davies, Mark. 2013. Corpus of Global Web-Based English. https://www.english-corpora.org/glowbe/ (14 June, 2021).
3. NOW = Davies, Mark. 2016- Corpus of News on the Web (NOW). https://www.english-corpora.org/now/ (16 December, 2021).
4. Harrell Frank E.Jr. 2014. Hmisc: Harrell Miscellaneous. R Package Version 4.7-2. http://CRAN.R-project.org/package=Hmisc (19 January, 2023).
5. R Development Core Team. 2021. R: A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing. https://www.r-project.org/ (19 January, 2023).