Jackson, K. David, review of R. A. Stewart Macalister, The Secret Languages of Ireland, in Modern Language Review, 32.4 (1937), pp. 598–99, doi:10.2307/3715265
Jackson, K. David, review of John Jay Parry, Geoffrey, Brut y Brenhinedd, in Modern Language Review, 33.1 (1938), pp. 61–62, doi:10.2307/3715813
Jackson, K. David, review of Henry Lewis, Holger Pedersen, A Concise Comparative Celtic Grammar, in Modern Language Review, 34.2 (1939), pp. 252–53, doi:10.2307/3717187
Jackson, K. David, review of Robin Flower, The Irish Tradition, in Modern Language Review, 43.4 (1948), pp. 539–40, doi:10.2307/3717946
Jackson, K. David, review of F. Falc'hun, Le Système Consonantique du Breton, avec une étude comparative de phonétique experimentale, in Modern Language Review, 47.3 (1952), pp. 408–09, doi:10.2307/3719043
Jackson, K. David, review of Thomas Parry, H. Idris Bell, A History of Welsh Literature, in Modern Language Review, 51.4 (1956), pp. 594–96, doi:10.2307/3719245
Jackson, K. David, review of Thomas Parry, The Oxford Book of Welsh Verse, in Modern Language Review, 57.4 (1962), pp. 604–05, doi:10.2307/3720495
Jackson, K. David, ‘The Presidential Address of the Modern Humanities Research Association, 1976: Fifty Years of Celtic Philology’, in Modern Language Review, 71.4 (1976), pp. xxiii–xxxvii, doi:10.2307/3726033
Jackson, K. David, ‘The Adventure of the Anarchist Banker: "Reductio ad absurdum" of a Neo-Liberal’, in Portuguese Studies, 22.2 (2006), pp. 209–18, doi:10.2307/41105264
Jackson, K. David, ‘Important Literary Works of Portuguese Modernism’, in Portuguese Modernisms: Multiple Perspectives on Literature and the Visual Arts, ed. by Steffen Dix and Jerónimo Pizarro (Legenda, 2011), pp. 364–77, doi: