Cita APA (7a ed.)

SpringerLink (Online service), Lagarias, J. C., & Ferguson, S. (2011). The Kepler conjecture: The Hales- Ferguson proof by Thomas Hales, Samuel Ferguson. Birkhäuser.

Cita Chicago Style (17a ed.)

SpringerLink (Online service), Jeffrey C. Lagarias, y Samuel Ferguson. The Kepler Conjecture: The Hales- Ferguson Proof by Thomas Hales, Samuel Ferguson. New York: Birkhäuser, 2011.

Cita MLA (9a ed.)

SpringerLink (Online service), et al. The Kepler Conjecture: The Hales- Ferguson Proof by Thomas Hales, Samuel Ferguson. Birkhäuser, 2011.