Foster, Samuel (2023) Re-imagining Arcadia:The South Slavic Balkans in the Changing Ideal of Western Europe, 1885-1914. In: Europe and the East. Ideas beyond Borders: Studies in Transnational and Intellectual History (1). Routledge, London and New York, pp. 210-232. ISBN 9781000878783
Foster, Samuel (2023) Beginnings. In: The Edinburgh Companion to First World War Periodicals. Edinburgh University Press, Edinburgh, pp. 211-226. ISBN 9781474494717
Foster, Samuel (2021) Yugoslavia in the British Imagination:Peace, War and Peasants before Tito. Bloomsbury Academic, London. ISBN 9781350114609
Foster, Samuel (2018) Reviving the Völkerabfälle:The South Slavonic Left, Balkan Federalism and the Creation of the First Yugoslavia. In: Reviving the Völkerabfälle. Socialist History (53). Lawrence & Wishart, pp. 47-68.
Foster, Samuel (2018) Propaganda at Home and in Exile (South East Europe). In: 1914-1918 Online: International Encyclopedia of the First World War. Freie Universität Berlin.
Foster, Samuel (2017) The Balkan Wars and the Macedonian Question through the Eyes of British Nationals. In: Macedonia 2013. Legas, Ottowa, pp. 95-108. ISBN 9781897493601
Foster, Samuel (2016) Trumbić, Ante. In: 1914-1918 Online: International Encyclopedia of the First World War. Freie Universität Berlin.
Foster, Samuel (2013) British medical volunteers and the Balkan Front 1914-1918: The case of Dr Katherine Stuart MacPhail. University of Sussex Journal of Contemporary History (14). pp. 4-16.