| hw.ac.uk | The International Commission on Second Language Acquisition (ICOSLA) |
| hayo.nl | Hayo Reinders |
| feralchildren.com | Feral Children - Critical Period Hypothesis |
| umn.edu | Center for Advanced Research on Language Acquisition-University of Minnesota. |
| eslresearcher.org | ESLResearcher.org |
| indiana.edu | Studies in Second Language Acquisition |
| soton.ac.uk | Language Acquisition |
| purdue.edu | Second Language Writing Research Network Forum |
| ntlworld.com | Second Language Acquisition Bibliography |
| wikipedia.org | Language Acquisition - Wikipedia |
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