Cita APA (7th ed.)

Munroe, R. (2014). What if?: Serious scientific answers to absurd hypothetical questions / Randall Munroe. Houghton Mifflin Harcourt.

Cita Chicago (17th ed.)

Munroe, Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions / Randall Munroe. Boston: Houghton Mifflin Harcourt, 2014.

Cita MLA (8th ed.)

Munroe, Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions / Randall Munroe. Houghton Mifflin Harcourt, 2014.