Lua APA (7ú heag.)
Poulsen, T. M. (1995). Nations and states: A geographic background to world affairs. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)
Poulsen, Thomas M. Nations and States: A Geographic Background to World Affairs. Englewood Cliffs, N.J.: Prentice Hall, 1995.
Lua MLA (9ú heag.)
Poulsen, Thomas M. Nations and States: A Geographic Background to World Affairs. Prentice Hall, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.