Munroe,Randall. (2014). What If?: Serious Scientific Answers to Absurd Hypothetical Questions (NA.). Houghton Mifflin Harcourt.
Chicago-viite (17. p.)Munroe,Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. NA. Boston: Houghton Mifflin Harcourt, 2014.
MLA-viite (9. p.)Munroe,Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. NA. Houghton Mifflin Harcourt, 2014.
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