Cita APA (7a ed.)

Helder, C. (2020). Useful belief: Because it's better than positive thinking. Wiley.

Cita Chicago Style (17a ed.)

Helder, Chris. Useful Belief: Because It's Better than Positive Thinking. Milton, Queensland: Wiley, 2020.

Cita MLA (9a ed.)

Helder, Chris. Useful Belief: Because It's Better than Positive Thinking. Wiley, 2020.