Spellman, W. M. (1998). European political thought 1600-1700. Macmillan.
Lua i Stíl Chicago (17ú heag.)Spellman, W. M. European Political Thought 1600-1700. Basingstoke: Macmillan, 1998.
Lua MLA (9ú heag.)Spellman, W. M. European Political Thought 1600-1700. Macmillan, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.