APA (7th ed.) Citation

Helle, K. (1968). Anglo-Norwegian Relations in the Reign of Hakon Hakonsson 1217-1263.

Chicago Style (17th ed.) Citation

Helle, Knut. Anglo-Norwegian Relations in the Reign of Hakon Hakonsson 1217-1263. 1968.

MLA (9th ed.) Citation

Helle, Knut. Anglo-Norwegian Relations in the Reign of Hakon Hakonsson 1217-1263. 1968.

Warning: These citations may not always be 100% accurate.