F. C. Baur: Die Epochen der kirchlichen Geschichtschreibung. 1852.

L. von Ranke: Zur Kritik neueren Geschichtschreiber.[2] 1874.

G. Wolf: Quellenkunde der deutschen Reformationsgeschichte. Vol. i, 1915; vol. ii, 1916.

Article, "History" in Encyclopedia Americana, ed. of 1919.

ORIGINALS.

N. Machiavelli: Istorie fiorentine. (to 1492). First ed. 1561-64.
Numerous editions, and English translation by C. E. Detmold: The
Historical, Political and Diplomatic Writings of N. Machiavelli. 4
vols. 1882.

Francesco Guicciardini: Storia fiorentina. (1378-1509). First published 1859. Istoria d' Italia. (1492-1534). First edition 1561-64; numerous editions since, and English translation by G. Fenton: The historie of Guicciardini. 1599.

Benvenuto Cellini: Life, translated by R. H. H. Cust. 2 vols. 1910.
(The original text first correctly published by O. Bacci, 1901. Many
English translations).

Paulus Jovius: Historiarum sui temporis libri. xlv. (1493-1347). 1550-52.

Polydore Vergil: Anglicae Historiae libri. xxvii, (to 1538). First edition, to 1509, Basle, 1534; 2d ed. 1555. (I use the edition of 1570. The best criticism is in H. A. L. Fisher's Political History of England 1485-1547, pp. 152 ff.)