Citazione Stile APA (7a Edizione)

Gillingham, J. (1971). The kingdom of Germany in the High Middle Ages (900 - 1200) (1. publ.). Historical Assoc.

Citazione stile Chigago Style (17a edizione)

Gillingham, John. The Kingdom of Germany in the High Middle Ages (900 - 1200). 1. publ. London: Historical Assoc, 1971.

Citatione MLA (9a ed.)

Gillingham, John. The Kingdom of Germany in the High Middle Ages (900 - 1200). 1. publ. Historical Assoc, 1971.