Levine, H. M. (1982). Political issues debated: An introduction to politics. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Levine, Herbert M. Political Issues Debated: An Introduction to Politics. Englewood Cliffs, N.J.: Prentice-Hall, 1982.
Lua MLA (8ú heag.)Levine, Herbert M. Political Issues Debated: An Introduction to Politics. Prentice-Hall, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.