Cita APA (7th ed.)

Ryrie, A., & Ryrie. (2019). Unbelievers: An emotional history of doubt (First Harvard University Press Edition.). Belknap.

Cita Chicago (17th ed.)

Ryrie, Alec, i Ryrie. Unbelievers: An Emotional History of Doubt. First Harvard University Press Edition. Cambridge: Belknap, 2019.

Cita MLA (9th ed.)

Ryrie, Alec, i Ryrie. Unbelievers: An Emotional History of Doubt. First Harvard University Press Edition. Belknap, 2019.