Clarkson, T. (1789). An essay on the comparative efficiency of regulation or abolition as applied to the slave trade shewing that the latter only can remove the evils to be found in that commerce. Printed by J. Phillips.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Clarkson, Thomas. An Essay on the Comparative Efficiency of Regulation or Abolition as Applied to the Slave Trade Shewing That the Latter Only Can Remove the Evils to Be Found in That Commerce. London: Printed by J. Phillips, 1789.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Clarkson, Thomas. An Essay on the Comparative Efficiency of Regulation or Abolition as Applied to the Slave Trade Shewing That the Latter Only Can Remove the Evils to Be Found in That Commerce. Printed by J. Phillips, 1789.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.