Parker, T. M. (1966). Principles of Government and Politics in the Middle Ages. By Walter Ullmann. Pp. 320. London: Methuen, 1961. 30s. The journal of ecclesiastical history, 17(1), 116-118. doi:10.1017/S0022046900051502
Chicago Style (17th ed.) CitationParker, Thomas M. "Principles of Government and Politics in the Middle Ages. By Walter Ullmann. Pp. 320. London: Methuen, 1961. 30s." The Journal of Ecclesiastical History 17, no. 1 (1966): 116-118, https://doi.org/10.1017/S0022046900051502.
MLA (9th ed.) CitationParker, Thomas M. "Principles of Government and Politics in the Middle Ages. By Walter Ullmann. Pp. 320. London: Methuen, 1961. 30s." The Journal of Ecclesiastical History, vol. 17, no. 1, 1966, pp. 116-118, https://doi.org/10.1017/S0022046900051502.
Warning: These citations may not always be 100% accurate.