Code Switching as a Countenance of Language Interference  
   An online web article published as part of The Internet TESL Journal.
   http://www.aitech.ac.jp/~iteslj/Articles/Skiba-CodeSwitching.html

Codeswitching in Conversation Forum  
   A discussion area for those interested in the topic of code switching.
   http://www.udc.es/dep/lx/cac/c-s/forum.html

A Minimalist Approach to Intrasentential Code Switching  
   1997 dissertation by Jeff MacSwan which explores the grammatical structure of Spanish/Nahuatl code switching. Available as PDF file or as a zipped download.
   http://www.public.asu.edu/~macswan/diss.html

The Architecture of the Bilingual Language Faculty: Evidence From Intrasentential Codeswitching.  
   Jeff MacSwan, 2000. PDF file.
   http://www.public.asu.edu/~macswan/Bilingualism.pdf

Code Switching Behavior and Knowledge of Adults and Children  
   A study of Spanish/English code switching practices and the linguistic knowledge of bilingual children and adults.
   http://hamminkj.cafeprogressive.com/CS_paper.htm

Code Switching eGroup  
   Unmoderated e-mail list for the for the discussion of alternation of linguistic varieties, bilingual conversation and related phenomena. Requires free registration.
   http://groups.yahoo.com/group/code-switching/

To -Er is to Err  
   A case of code-switching in standard Mandarin.
   http://www.indiana.edu/~easc/resources/working_paper/noframe_3b.htm

Rethinking conversational code-switching: codes, speech varieties, and contextualization  
   Article on the purposes and varieties of code switching by Celso Alvarez Caccamo. Also available in PDF format.
   http://www.udc.es/dep/lx/cac/artigos/bls90.htm