Smith, W. G. (1900). George Allen, LL.D.: Read before the Society of the Alumni of the University of Pennsylvania at Houston Hall, June 13, 1900. Philadelphia.
Chicago-referens (17:e uppl.)Smith, Walter George. George Allen, LL.D.: Read Before the Society of the Alumni of the University of Pennsylvania at Houston Hall, June 13, 1900. Philadelphia, 1900.
MLA-referens (8:e uppl.)Smith, Walter George. George Allen, LL.D.: Read Before the Society of the Alumni of the University of Pennsylvania at Houston Hall, June 13, 1900. Philadelphia, 1900.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.