Cita APA

Randall Munroe. (2015). What If?: Serious Scientific Answers to Absurd Hypothetical Questions. John Murray.

Chicago Edition Citation

Randall Munroe. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. London: John Murray, 2015.

Cita MLA

Randall Munroe. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. John Murray, 2015.