APA stil citiranja

Spencer, H. (1887). First principles: First principles (5th ed.). London: Williams and Norgate.

Chicago stil citiranja

Spencer, Herbert. First principles: First principles. 5th ed. London: Williams and Norgate, 1887.

MLA stil citiranja

Spencer, Herbert. First principles: First principles. 5th ed. London: Williams and Norgate, 1887.

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