http://skuld.bmsc.washington.edu/~merritt/bc530/bragg/ (Java applet and explanation on Bragg’s Law)
http://www.iucr.org/education/pamphlets (Set of Online Tutorials provided by the International Union of Crystallographers)
http://epswww.unm.edu/xrd/IndU-x-rayguide2004.pdf (Safety guide for the use of laboratory X-Ray equipment by Indiana University)
Bish, D. L., Post, J.E. Modern Powder Diffraction, Reviews in Mineralogy (vol 20).
Mineralogical Society of America, 1989. Google books...
Brindley, G. W., Brown, G. Crystal structures of clay minerals and their identification.
Mineralogical Society Monograph 5, 1980. Google books...
Cullity, B. D. Elements of X-ray Diffraction (2nd ed).
Addison-Wesley Publishing Co. Menlo Park, CA., 1978. Google books...
Iyengar, S. S., Buhrke, V. E. (ed), Jenkins, R. (ed), Smith, D. K. (ed). Sample Preparation for Clays In Preparation of Specimens for X-ray Fluorescence and X-ray Diffraction Analysis.
New York: Wiley-VCH., 1997. Journal link...
Jackson, M. L. Soil Chemical Analysis -- Advanced Course (2nd ed).
Madison, Wis.: Published by the Author., 1979. Google books...
Klug, H. P., Alexander, L.E. X-ray Diffraction Procedures.
New York: J. Wiley and Sons, Inc., 1974. Google books...
Kunze, G. W. Pretreatments for Mineralogical Analysis. In C. A. Black (ed) Methods of Soil Analysis. Part I. Physical and Mineralogical properties including statistics of measurement and sampling.
Agronomy 9: 568-577, 1965.
Moore, D. M., Reynolds, R.C. X-ray Diffraction and the Identification and Analysis of Clay Minerals.
Oxford: Oxford University Press, 1989. Google books...