APA (7th ed.) Citation

Parry, C. (1970). An index of British treaties, 1101-1968.

Chicago Style (17th ed.) Citation

Parry, Clive. An Index of British Treaties, 1101-1968. 1970.

MLA (9th ed.) Citation

Parry, Clive. An Index of British Treaties, 1101-1968. 1970.

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