Heikkilä, P. (2014). Estonians for Europe: National activism for European unification since the 1920s until the end of the Cold War. P.I.E. Peter Lang S.A.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHeikkilä, Pauli. Estonians for Europe: National Activism for European Unification Since the 1920s Until the End of the Cold War. Brussels, Belgium: P.I.E. Peter Lang S.A, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHeikkilä, Pauli. Estonians for Europe: National Activism for European Unification Since the 1920s Until the End of the Cold War. P.I.E. Peter Lang S.A, 2014.
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