Gross, B. M., & Springer, M. (1970). Political intelligence for America's future. [s.n.].
Lua i Stíl Chicago (17ú heag.)Gross, Bertram Myron, agus Michael Springer. Political Intelligence for America's Future. Philadelphia: [s.n.], 1970.
Lua MLA (9ú heag.)Gross, Bertram Myron, agus Michael Springer. Political Intelligence for America's Future. [s.n.], 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.