APA stil citiranja

Spencer, H. (1893). The principles of ethics: The principles of ethics. Vol. 2. The principles of ethics.

Chicago stil citiranja

Spencer, Herbert. "The principles of ethics: The principles of ethics. Vol. 2." 1893.

MLA stil citiranja

Spencer, Herbert. "The principles of ethics: The principles of ethics. Vol. 2." 1893.

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