Lua APA (7ú heag.)
Kotto, Y., Hurt, J., Skerritt, T., Weaver, S., Scott, R., & Cartwright, V. (1993). Alien. De Agostini.
Lua i Stíl Chicago (17ú heag.)
Kotto, Yaphet, John Hurt, Tom Skerritt, Sigourney Weaver, Ridley Scott, agus Veronica Cartwright. Alien. Novara: De Agostini, 1993.
Lua MLA (9ú heag.)
Kotto, Yaphet, et al. Alien. De Agostini, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.