Franklin
Gravity pulls at the speed of darkness [electronic resource] / by Robert Alexander.
MLA
Alexander, Robert. Gravity Pulls At the Speed of Darkness. [1st electronic ed.]. Alexandria, VA: Alexander Street Press, 2004.
APA
Alexander, R. (2004). Gravity pulls at the speed of darkness. [1st electronic ed.]. Alexandria, VA: Alexander Street Press.
Chicago
Alexander, Robert. Gravity Pulls At the Speed of Darkness. [1st electronic ed.]. Alexandria, VA: Alexander Street Press, 2004.
