Headey, B. W. (1974). British Cabinet Ministers: The roles of politicians in executive office. Allen & Unwin.
Citace podle Chicago (17th ed.)Headey, Bruce W. British Cabinet Ministers: The Roles of Politicians in Executive Office. London: Allen & Unwin, 1974.
Citace podle MLA (9th ed.)Headey, Bruce W. British Cabinet Ministers: The Roles of Politicians in Executive Office. Allen & Unwin, 1974.
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