APA (7th ed.) Citation

Ng. (2022). Happinessâ€"Concept, Measurement and Promotion (1.). Springer Singapore.

Chicago Style (17th ed.) Citation

Ng. Happinessâ€"Concept, Measurement and Promotion. 1. Springer Singapore, 2022.

MLA (8th ed.) Citation

Ng. Happinessâ€"Concept, Measurement and Promotion. 1. Springer Singapore, 2022.

Warning: These citations may not always be 100% accurate.