Guidelines for Children's Books--Richard C. Owen Publishers, Inc http://www.rcowen.com/authllus.htm
Writing for Children http://www.bethanyroberts.com/writing_picture_books.htm
Make Your Picture Book Sparkle! By Peggy Tibbetts http://www.writing-world.com/children/sparkle.shtml
Aaron Shepard’s Kidwriting Page--Writing Children’s Books, Publishing Children’s Books http://www.aaronshep.com/kidwriter/