Gaya APA

Tyson, N, D. (1923). Nei degrasse tyson astrphysics for people in a hurry . New York: w. w. norton & company.

Gaya MLA

Tyson, Neil, DeGrasse. "Nei degrasse tyson astrphysics for people in a hurry". New York: w. w. norton & company, 1923. .