APA

Ogg F. A., . (1907). A source book of mediæval history: documents illustrative of European life and institutions from the German invasion to the renaissance. New York: American Book Co.

Chicago

Ogg Frederic Austin, . 1907. A source book of mediæval history: documents illustrative of European life and institutions from the German invasion to the renaissance. New York: American Book Co.

Harvard

Ogg F. A., . (1907). A source book of mediæval history: documents illustrative of European life and institutions from the German invasion to the renaissance. New York: American Book Co.

MLA

Ogg Frederic Austin, . A source book of mediæval history: documents illustrative of European life and institutions from the German invasion to the renaissance. New York: American Book Co. 1907.