SOULE, G. The new science of economics#completely edition, expanded by more than half of introduction to economic science#George Soule. Faincett World.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)SOULE, George. The New Science of Economics#completely Edition, Expanded by More than Half of Introduction to Economic Science#George Soule. Faincett World.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)SOULE, George. The New Science of Economics#completely Edition, Expanded by More than Half of Introduction to Economic Science#George Soule. Faincett World.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.