Munroe,Randall. (2014). What If?: Serious Scientific Answers to Absurd Hypothetical Questions (NA.). Houghton Mifflin Harcourt.
Chicago Style aipamenaMunroe,Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. NA. Boston: Houghton Mifflin Harcourt, 2014.
MLA aipamenaMunroe,Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. NA. Houghton Mifflin Harcourt, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.