Christian Fiction: A Guide to the Genre by John Mort.
This book gives a number of Readers' Advisory sources, as well as covering a very wide range of Christian fiction. YA titles are marked throughout the text, and a few are covered in a YA chapter at the end.
Encyclopedia of Contemporary Christian Fiction: From C.S. Lewis to Left Behind by Nancy M. Tischler
This book gives brief biographies for a number of authors, along with a selection of titles by the author and works about the author.
The Christy Awards From Novelist Plus: In 1999, Christian publishers realized the need to create a Christian fiction award that would recognize excellence in several genres of Christian fiction. The Christy Award was named to honor popular Christian fiction writer Catherine Marshall and one of her novels, Christy . Categories recognized have changed over time, and winners are announced annually.
Awarded by the Evangelical Christian Publishers Association since 1978. Formerly known as the Gold Medallion. http://christianbookawards.com
Presented by the American Christian Fiction Writers, recognizing the best Christian fiction published by traditional publishing houses. http://www.acfw.com/carol
"The blogger's award for excellence in faith-driven literature." http://inspys.com/?p=710
Things to remember! Check your own beliefs and disbeliefs at the door! Look at books for quality and what the book will do, not for the publisher or the author. Don't forget that Christian fiction spans many other genres. There are Christian fiction mysteries, fantasies, science fiction, romances, and historical fiction.