Citazione Stile APA (7a Edizione)

Emerton, E. (1888). An Introduction to the study of the middle ages (375-814). S.n.

Citazione stile Chigago Style (17a edizione)

Emerton, Ephraim. An Introduction to the Study of the Middle Ages (375-814). Boston: S.n, 1888.

Citatione MLA (9a ed.)

Emerton, Ephraim. An Introduction to the Study of the Middle Ages (375-814). S.n, 1888.