Both Spanish and English titles. To verify the availability of a book, consult WorldCat . And for journal availability, UnionList . To check on any online access through subscriber database to a particular journal title, see jake . For directions on how to use the highly controlled search mechanism, consult Altavista Main and Advanced Search Elements .
Web directories vary in restrictiveness, but all have some sort of rating system for site inclusion.
This same site also links to selected online critical works, a banco de textos teatrales . Web sites may be more substantial as sources of primary rather than secondary information. Style guides Trexler Library's MLA Style Examples offers models for citing print and electronic sources in a bibliography.