Es autor de obras como British and American Anticommunism before the Cold War (Taylor & Francis, 2001);[3][4][5] Churchill and Finland: A Study in Anti-Communism and Geopolitics (Routledge, 2005);[6][2] John Spargo and American Socialism (Palgrave, 2006), una biografía del socialista John Spargo;[7] The Origins of Christian Anti-Internationalism: Conservative Evangelicals and the League of Nations (Georgetown University Press, 2008);[8][9][10][11] o Yhdysvaltain kristillinen oikeisto (Gaudeamus, 2008);[12] entre otras.
Foglesong, David S. (junio de 2002). «British and American Anticommunism before the Cold War by Markku Ruotsila». The International History Review (Taylor & Francis, Ltd.) 24 (2): 437-438. ISSN0707-5332. JSTOR40110151.
Roberts, Sean P. (2014). «Markku Ruotsila, Churchill and Finland: A Study in Anti-Communism and Geopolitics. New York: Routledge, 2005. 199 pp.; and Craig Gerrard, The Foreign Office and Finland 1938–1940: Diplomatic Sideshow. London: Frank Cass, 2005. 189 pp.». Journal of Cold War Studies(en inglés)16 (1): 235-237. doi:10.1162/JCWS_r_00421.
Weeks, David L. (abril de 2009). «The Origins of Christian Anti-Internationalism: Conservative Evangelicals and the League of Nations. By Markku Ruotsila. Washington, DC: Georgetown University Press, 2008. 256 pp. $49.95, Cloth, $29.95 Paper». Politics and Religion(en inglés) (Religion and Politics Section of the American Political Science Association) 2 (1): 130-132. doi:10.1017/S1755048309000078.