Cita APA (7a ed.)

Williams, N., & Crowley, D. (2019). This is happiness (Unabridged.). W. F. Howes Ltd.

Cita Chicago Style (17a ed.)

Williams, Niall, y Dermot Crowley. This Is Happiness. Unabridged. Rearsby, Leicestershire: W. F. Howes Ltd, 2019.

Cita MLA (8a ed.)

Williams, Niall, y Dermot Crowley. This Is Happiness. Unabridged. W. F. Howes Ltd, 2019.

Precaución: Estas citas no son 100% exactas.