Lua APA (7ú heag.)

Davidson, B. (1987). Spencer Tracy: Tragic idol / Bill Davidson. Dutton.

Lua i Stíl Chicago (17ú heag.)

Davidson, Bill. Spencer Tracy: Tragic Idol / Bill Davidson. New York: Dutton, 1987.

Lua MLA (8ú heag.)

Davidson, Bill. Spencer Tracy: Tragic Idol / Bill Davidson. Dutton, 1987.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.