- Crystal Systems from Wikipedia
- Bravais lattice from Wikipedia
- Point group from Wikipedia
- Space group from Wikipedia
- 17 wallpaper patterns from Wikipedia

- Miller indices from Wikipedia
- Crystal Structures, rotable 3D models
- Flash: 3D Crystal Viewer
- hexagonal close packing and fcc from YouTube
- Close Packed Structures
- Structures of Metals: Close Packing
- Heesch-Laves Loose packed sttructure - The Colossal Book of Mathematics by Martin Gardner
- Prof. Dr. Besire Gönül's notes
- Prof. Reka Albert's notes
- Penrose tiling from Wikipedia
- Quasicrystals from Wikipedia
- Musical instruments play quasicrystal tune from New Scientist 17 June 1989
- Crystallography demonstrations from Wolfram