Benjamin B. Warfield. „Calvinism”. Ур.: Johann Jakob Herzog; Philip Schaff; Albert Hauck. The New Schaff-Herzog Encyclopedia of Religious Knowledge. стр. 359. „[T]he fundamental principle of Calvinism ... lies in a profound apprehension of God in his majesty, with the inevitably accompanying poignant realization of the exact nature of the relation sustained to him by the creature as such, and particularly by the sinful creature.”(језик: енглески)
Schaff, Philip. „Protestantism”. New Schaff-Herzog Encyclopedia of Religious Knowledge. IX. стр. 297—299.
lutheranreformation.org
„Sola Fide”. Lutheran Reformation (на језику: енглески). 2016-06-16. Приступљено 2020-10-06.
