Lyschinska, M. J., & Montefiore, T. G. (1890). The Ethical teaching of Froebel: As gathered from his works; two essays. Egan Paul, Trench.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lyschinska, Mary J., و Therese G. Montefiore. The Ethical Teaching of Froebel: As Gathered from His Works; Two Essays. London: Egan Paul, Trench, 1890.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lyschinska, Mary J., و Therese G. Montefiore. The Ethical Teaching of Froebel: As Gathered from His Works; Two Essays. Egan Paul, Trench, 1890.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.