Muir, R. (1981). Modern political geography. Macmillan Education.
Lua i Stíl Chicago (17ú heag.)Muir, Richard. Modern Political Geography. Hampshire: Macmillan Education, 1981.
Lua MLA (9ú heag.)Muir, Richard. Modern Political Geography. Macmillan Education, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.