Stearn, G. E. (1971). Gompers: Ed. by Gerald Emanuel Stearn. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Stearn, Gerald Emanuel. Gompers: Ed. by Gerald Emanuel Stearn. Englewood Cliffs: Prentice-Hall, 1971.
Lua MLA (8ú heag.)Stearn, Gerald Emanuel. Gompers: Ed. by Gerald Emanuel Stearn. Prentice-Hall, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.