APA (7th ed.) Citation

Bisson, T. N. (1976). An "Unknown Charter" for Catalonia (A.D. 1205). [s.n.].

Chicago Style (17th ed.) Citation

Bisson, Thomas N. An "Unknown Charter" for Catalonia (A.D. 1205). [S.l.]: [s.n.], 1976.

MLA (9th ed.) Citation

Bisson, Thomas N. An "Unknown Charter" for Catalonia (A.D. 1205). [s.n.], 1976.