APA (7th ed.) Citation

Haslam, R. (1979). Powys: Montgomeryshire, Radnorshire, Breconshire (1. publ.). Penguin Books.

Chicago Style (17th ed.) Citation

Haslam, Richard. Powys: Montgomeryshire, Radnorshire, Breconshire. 1. publ. Harmondsworth: Penguin Books, 1979.

MLA (9th ed.) Citation

Haslam, Richard. Powys: Montgomeryshire, Radnorshire, Breconshire. 1. publ. Penguin Books, 1979.

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