Cita APA (7th ed.)

Munroe Randall. (2019). What If?: Serious Scientific Answers to Absurd Hypothetical Questions. John Murray.

Cita Chicago (17th ed.)

Munroe Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. UK: John Murray, 2019.

Cita MLA (9th ed.)

Munroe Randall. What If?: Serious Scientific Answers to Absurd Hypothetical Questions. John Murray, 2019.