Rowell, S. C. “Olim Multorum Patronus et Praesidium, Nunc Ecce Cliens: The Death and Posthumous Eulogy of Prince John of the Lithuanian Dukes, Spring 1538”. Senoji Lietuvos Literatūra, vol. 50, Dec. 2020, pp. 269-85, https://journals.vu.lt/sll/article/view/27379.