Roberts, I. (1974). Crystals and their structures. Methuen.
Chicago Style aipamenaRoberts, I.E. Crystals and Their Structures. London: Methuen, 1974.
MLA aipamenaRoberts, I.E. Crystals and Their Structures. Methuen, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.