Citazione APA

 Bardi, J. S. (2009).  The fifth postulate: How unraveling a two-thousand-year-old mystery unraveled the universe.  John Wiley & Sons.

Stile di citazione Chicago

 Bardi, Jason Socrates.  The Fifth Postulate: How Unraveling a Two-thousand-year-old Mystery Unraveled the Universe.  John Wiley & Sons, 2009.

Citazione MLA

 Bardi, Jason Socrates.  The Fifth Postulate: How Unraveling a Two-thousand-year-old Mystery Unraveled the Universe.  John Wiley & Sons, 2009.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.