Cameron, L. L. L. (1971). The challenge of need: A history of social service by the Church of Scotland, 1869-1969. Saint Andrew Press [for the Committee on Social Service of the Church of Scotland].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cameron, Lewis Legertwood Legg. The Challenge of Need: A History of Social Service by the Church of Scotland, 1869-1969. Edinburgh: Saint Andrew Press [for the Committee on Social Service of the Church of Scotland], 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Cameron, Lewis Legertwood Legg. The Challenge of Need: A History of Social Service by the Church of Scotland, 1869-1969. Saint Andrew Press [for the Committee on Social Service of the Church of Scotland], 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.