Eckstein, H. (1960). Pressure group politics: The case of the British Medical Association. Allen & Unwin.
Citace podle Chicago (17th ed.)Eckstein, Harry. Pressure Group Politics: The Case of the British Medical Association. London: Allen & Unwin, 1960.
Citace podle MLA (8th ed.)Eckstein, Harry. Pressure Group Politics: The Case of the British Medical Association. Allen & Unwin, 1960.
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