Cita APA (7th ed.)

Davies, S. (2013). Laughology: Improve your life with the science of laughter. Crown House Publishing Limited.

Cita Chicago (17th ed.)

Davies, Stephanie. Laughology: Improve Your Life with the Science of Laughter. Carmarthen, Wales, UK: Crown House Publishing Limited, 2013.

Cita MLA (9th ed.)

Davies, Stephanie. Laughology: Improve Your Life with the Science of Laughter. Crown House Publishing Limited, 2013.