Barker, E. (1928). National character and the factors in its formation: By Ernest Barker (2nd ed.). Methuen.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Barker, Ernest. National Character and the Factors in Its Formation: By Ernest Barker. 2nd ed. London: Methuen, 1928.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Barker, Ernest. National Character and the Factors in Its Formation: By Ernest Barker. 2nd ed. Methuen, 1928.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.