Below are some of the sources that I've used to put this site together. At the bottom of each page on the site, you will see a "source" link if I have referenced a book, website, newsletter, or magazine for the information contained on that page. Beside the source link, you'll find the author's name, which you can match to the list below for further reference.
Griffey, Harriet. Sleep Well Tonight! Sure-Fire Solutions for a Good Night's Rest. New York, New York: Sterling Publishing Co., Inc., 1998.