Pfeffer, J. (1998). The Human Equation. Random House.
Lua i Stíl Chicago (17ú heag.)Pfeffer, Jeffrey. The Human Equation. New York: Random House, 1998.
Lua MLA (9ú heag.)Pfeffer, Jeffrey. The Human Equation. Random House, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.