McBride, P. J. (1980). Human Geography: Principles, processes and patterns. Blackie.
Lua i Stíl Chicago (17ú heag.)McBride, Patrick J. Human Geography: Principles, Processes and Patterns. Glasgow: Blackie, 1980.
Lua MLA (9ú heag.)McBride, Patrick J. Human Geography: Principles, Processes and Patterns. Blackie, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.