Carlyle 1868, p. 381. - Carlyle, Thomas, ed. (1868), Oliver Cromwell's Letters and Speeches: Including the Supplement to the First Edition, Harper & brothers
"tenaille", American Heritage Dictionary of the English Language, Fourth Edition. Houghton Mifflin Company. http://www.thefreedictionary.com/tenaille
Carlyle 1868, pp. 382, 383. - Carlyle, Thomas, ed. (1868), Oliver Cromwell's Letters and Speeches: Including the Supplement to the First Edition, Harper & brothers
de Vernon 1817, p.46. - de Vernon, Simon François Gay (1817), A Treatise on the Science of War and Fortification: Composed for the Use of the Imperial Polytechnick School, and Military Schools; and Translated for the War Department, for the Use of the Military Academy of the United States: to which is Added a Summary of the Principles and Maxims of Grand Tactics and Operations, translated by O'Connor, John Michael, Printed by J. Seymour
de Vernon 1817, pp. 46–47. - de Vernon, Simon François Gay (1817), A Treatise on the Science of War and Fortification: Composed for the Use of the Imperial Polytechnick School, and Military Schools; and Translated for the War Department, for the Use of the Military Academy of the United States: to which is Added a Summary of the Principles and Maxims of Grand Tactics and Operations, translated by O'Connor, John Michael, Printed by J. Seymour