University Center for International Studies. (2004). Historical Methods. Heldref Publications.
Citação do estilo Chicago (17ª ed.)University Center for International Studies. Historical Methods. Washington: Heldref Publications, 2004.
Citação MLA (8ª ed.)University Center for International Studies. Historical Methods. Heldref Publications, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.