Poliitiliste aadete ja vormide areng vanakreeka linnriigist nüüdisajani

Digiteeritud Euroopa Regionaalarengu Fondi rahastusel, projekti "Eesti teadus- ja õppekirjandus" (2014-2020.12.03.21-0848) raames.https://www.ester.ee/record=b1189959*es

Main currents of European history, 1815-1915,

Reprinted, 1920."Supplementary bibliography" at end of chapters.Mode of access: Internet

Democracy at the crossways; a study in politics and history, with special reference to Great Britain,

Mode of access: Internet

King's college lectures on colonial problems,

Mode of access: Internet