Etzler, J. A. (1833). The paradise within the reach of all men without labor, by powers of nature and machinery: An address to all intelligent men. In two parts. Etzler and Reinhold.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Etzler, J. A. The Paradise Within the Reach of All Men Without Labor, by Powers of Nature and Machinery: An Address to All Intelligent Men. In Two Parts. Pittsburgh, Pa.: Etzler and Reinhold, 1833.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Etzler, J. A. The Paradise Within the Reach of All Men Without Labor, by Powers of Nature and Machinery: An Address to All Intelligent Men. In Two Parts. Etzler and Reinhold, 1833.
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