Roolaht, T. (2002). The internationalization of Estonian companies: An exploratory study of relationship aspects. Tartu University Press.
Lua i Stíl Chicago (17ú heag.)Roolaht, Tõnu. The Internationalization of Estonian Companies: An Exploratory Study of Relationship Aspects. Tartu: Tartu University Press, 2002.
Lua MLA (8ú heag.)Roolaht, Tõnu. The Internationalization of Estonian Companies: An Exploratory Study of Relationship Aspects. Tartu University Press, 2002.
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