Lua APA (7ú heag.)
Zetter, L. (2011). Lobbying: The art of political persuasion (Revised, updated and expanded second edition.). Harriman House.
Lua i Stíl Chicago (17ú heag.)
Zetter, Lionel. Lobbying: The Art of Political Persuasion. Revised, updated and expanded second edition. Petersfield, Hampshire: Harriman House, 2011.
Lua MLA (9ú heag.)
Zetter, Lionel. Lobbying: The Art of Political Persuasion. Revised, updated and expanded second edition. Harriman House, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.