Ross, J. P., & Burkhead, J. (1974). Productivity in the local government sector. Lexington Books.
Lua i Stíl Chicago (17ú heag.)Ross, John P., agus Jesse Burkhead. Productivity in the Local Government Sector. Lexington, Mass: Lexington Books, 1974.
Lua MLA (9ú heag.)Ross, John P., agus Jesse Burkhead. Productivity in the Local Government Sector. Lexington Books, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.