Allaud, L. A., & Martin, M. H. (1977). Schlumberger: The history of a technique. Wiley.
Lua i Stíl Chicago (17ú heag.)Allaud, Louis A., agus Maurice H. Martin. Schlumberger: The History of a Technique. New York: Wiley, 1977.
Lua MLA (9ú heag.)Allaud, Louis A., agus Maurice H. Martin. Schlumberger: The History of a Technique. Wiley, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.