APA (7th ed.) Citation

Zheng, W., Kaur, S., & Yan, Z. (2009). Focus retention, performance-based perspective from Malaysian samples.

Chicago Style (17th ed.) Citation

Zheng, W.B, S. Kaur, and Z. Yan. Focus Retention, Performance-based Perspective from Malaysian Samples. 2009.

MLA (9th ed.) Citation

Zheng, W.B, et al. Focus Retention, Performance-based Perspective from Malaysian Samples. 2009.