Fortescue, A., The Orthodox Eastern Church (London, 1908); The Lesser Eastern Churches (London, 1913).

Freeman, E. A., Historical Essays, Third Series (London, 1879); The History and Conquests of the Saracens (London, 1877).

Garnett, Lucy, Turkey and the Ottomans (New York, 1911).

Gelzer, H., Vom Heiligen Berge und aus Makedonien (Leipsic, 1904).

Gibbon, E., The History of the Decline and Fall of the Roman Empire.

Gibbons, H. A., The Foundation of the Ottoman Empire (New York, 1916).

Glaser, E., Skizze der Geschichte und Geographie Arabiens von den ältesten Zeiten bis zum Propheten Muhammed (Berlin, 1890).

Gobineau, M. A. de, Les Religions et les Philosophies dans l’Asie Centrale (Paris, 1865).

Goldziher, I., Mohammed and Islam (New Haven, 1917).

Halid, Halil, Diary of a Turk (London, 1903).