Definition of rifling:
- "Diary of Samuel Pepys, Complete Transcribed From The Shorthand Manuscript In The Pepysian Library Magdalene College Cambridge By The Rev. Mynors Bright", Samuel Pepys Commentator: Lord Braybrooke.
- "The Master Mystery", Arthur B. Reeve and John W. Grey.
- "The Lamplighter", Maria S. Cummins.