APA (7th ed.) Citation

Hogg, A. H. A. (1979). British hill-forts: An index. B.A.R..

Chicago Style (17th ed.) Citation

Hogg, A. H. A. British Hill-forts: An Index. Oxford: B.A.R., 1979.

MLA (9th ed.) Citation

Hogg, A. H. A. British Hill-forts: An Index. B.A.R., 1979.