<!-- -->
-* [The Scheme Programming Language](http://scheme.com/tspl4/), by R. Kent Dybvig ([errata](http://scheme.com/tspl4-errata.html))
-* [Programming Languages: Application and Interpretation/2ed](http://cs.brown.edu/courses/cs173/2012/book/)
-* The [Schematics Scheme Cookbook](http://schemecookbook.org/) is a collaborative effort to produce documentation and recipes for using Scheme for common tasks.
+* [The Scheme Programming Language](http://scheme.com/tspl4/)/4ed, by R. Kent Dybvig ([errata](http://scheme.com/tspl4-errata.html))
+* [Structure and Interpretation of Computer Programs](http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-4.html)/2ed (SICP)
+* [Programming Languages: Application and Interpretation](http://cs.brown.edu/courses/cs173/2012/book/)/2ed
+
+<!-- -->
* [The Adventures of a Pythonista in Schemeland](http://www.phyast.pitt.edu/~micheles/scheme/index.html)
* [Comparing Chicken to C, Python, and Perl](http://wiki.call-cc.org/language-comparison)
* [Chicken for Pythonistas](http://wiki.call-cc.org/chicken-for-python-programmers)
-* [Stack Overflow](http://stackoverflow.com/questions/tagged/scheme?sort=faq) questions tagged "scheme"
+* [Haskell vs Scheme](http://www.reddit.com/r/programming/comments/nq1k/haskell_and_scheme_which_one_and_why/)
+
+<!-- -->
* Chicken [Tips and tricks](http://wiki.call-cc.org/tips%20and%20tricks)
+* The [Schematics Scheme Cookbook](http://schemecookbook.org/) is a collaborative effort to produce documentation and recipes for using Scheme for common tasks.
+* [Stack Overflow](http://stackoverflow.com/questions/tagged/scheme?sort=faq) questions tagged "scheme"
+* [Scheme Wiki](http://community.schemewiki.org/)
+* [Documents at Schemers.org](http://www.schemers.org/Documents/)
+
-<!-- -->
-* [huh?](https://acm.wustl.edu/functional/scheme.php)
-* [Scheme Wiki](http://community.schemewiki.org/)
-* [Documents at Schemers.org](http://www.schemers.org/Documents/)
-* [h vs s](http://www.reddit.com/r/programming/comments/nq1k/haskell_and_scheme_which_one_and_why/)
-* Chicken Interview Part [1](http://spin.atomicobject.com/2013/05/02/chicken-scheme-part-1/) [2](http://spin.atomicobject.com/2013/06/19/chicken-scheme-spock-part-2/)
<!--