Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.