APA-Zitierstil (7. Ausg.)

Webb, S. (2002). If the Universe is Teeming with Aliens... Where is Everybody?: Fifty Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life. Springer New York. https://doi.org/10.1007/b97464

Chicago-Zitierstil (17. Ausg.)

Webb, Stephen. If the Universe Is Teeming with Aliens... Where Is Everybody?: Fifty Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life. New York, NY: Springer New York, 2002. https://doi.org/10.1007/b97464.

MLA-Zitierstil (9. Ausg.)

Webb, Stephen. If the Universe Is Teeming with Aliens... Where Is Everybody?: Fifty Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life. Springer New York, 2002. https://doi.org/10.1007/b97464.