Keen ObservationAGOSTINO, PATRICIALippincott Williams and Wilkins1977DOI 10.1097/00152193-197710000-00007
Ernest Keen comments:Ernest KeenJohn Wiley and Sons2000DOI 10.1002/(sici)1520-6696(200024)36:1<59::aid-jhbs15>3.0.co;2-3
Chivalryby Maurice KeenReview by: Bernhard W. ScholzAmerican Historical Association1985DOI 10.2307/1860977
Chivalryby Maurice KeenReview by: Michael R. PowickeAlbion A Quarterly Journal Concerned with British Studies1985DOI 10.2307/4049339