Burnham, P., Gilland, K., Grant, W., & Henry, Z. L. (2008). Research methods in politics (Second edition.). Palgrave Macmillan.
Cita Chicago Style (17a ed.)Burnham, Peter, Karin Gilland, Wyn Grant, y Zig Layton Henry. Research Methods in Politics. Second edition. Basingstoke, Hampshire, Eng: Palgrave Macmillan, 2008.
Cita MLA (9a ed.)Burnham, Peter, et al. Research Methods in Politics. Second edition. Palgrave Macmillan, 2008.
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