Leftwich, A. (1990). New developments in political science: An international review of achievements and prospects. E. Elgar.
Lua i Stíl Chicago (17ú heag.)Leftwich, Adrian. New Developments in Political Science: An International Review of Achievements and Prospects. Aldershot, Hants, England: E. Elgar, 1990.
Lua MLA (9ú heag.)Leftwich, Adrian. New Developments in Political Science: An International Review of Achievements and Prospects. E. Elgar, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.