Brooks, J. G. (1890). The Consumers' league: The economic principle upon which it rests and the practicability of its enforcement. the Co-operative press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Brooks, John Graham. The Consumers' League: The Economic Principle upon Which It Rests and the Practicability of Its Enforcement. [Cambridge: the Co-operative press, 1890.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Brooks, John Graham. The Consumers' League: The Economic Principle upon Which It Rests and the Practicability of Its Enforcement. the Co-operative press, 1890.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.