Παραπομπή σε μορφή APA (7η εκδ.)

Ashkenazi, M. (2017). What We Know About Extraterrestrial Intelligence: Foundations of Xenology. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ashkenazi, Michael. What We Know About Extraterrestrial Intelligence: Foundations of Xenology. Cham: Springer International Publishing : Imprint: Springer, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ashkenazi, Michael. What We Know About Extraterrestrial Intelligence: Foundations of Xenology. Springer International Publishing : Imprint: Springer, 2017.