1. Learning Vocabulary in Another Language
2. How Large a Vocabulary is Needed For Reading and Listening?
3. How Useful Is Eap Vocabulary for Esp? a Corpus Based Case Study
4. K. Hwang and P. Nation, “Reducing the vocabulary load and encouraging vocabulary learning through reading newspapers,” Reading in a Foreign Language 6(1), pp. 323–35 (1989).
5. D. Hirsh and P. Nation, “What vocabulary size is needed to read unsimplified texts for pleasure?,” Reading in a Foreign Language 8(2), pp. 689–696 (1992).