Barker, E. (1951). Essay on Government (2nd.). Clarendon Press.
Chicago-čujuhus (17. p.)Barker, Ernest. Essay on Government. 2nd. Oxford: Clarendon Press, 1951.
MLA-čujuhus (9. p.)Barker, Ernest. Essay on Government. 2nd. Clarendon Press, 1951.
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