Zetter, L. (2011). Lobbying: The art of political persuasion (Revised, updated and expanded second edition.). Harriman House.
Citace podle Chicago (17th ed.)Zetter, Lionel. Lobbying: The Art of Political Persuasion. Revised, updated and expanded second edition. Petersfield, Hampshire: Harriman House, 2011.
Citace podle MLA (9th ed.)Zetter, Lionel. Lobbying: The Art of Political Persuasion. Revised, updated and expanded second edition. Harriman House, 2011.
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