Gaya APA

Webb, S. (2015). E-book If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life . : Springer.

Gaya MLA

Webb, Stephen. "E-book If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life". : Springer, 2015. Text.