APA (7th ed.) Citation

Lit, L., Cheng, H., & Cheah, S. (2007). In vitro effect of Malaysian plants on natural killer cell activity.

Chicago Style (17th ed.) Citation

Lit, L.C, H.M Cheng, and S.H Cheah. In Vitro Effect of Malaysian Plants on Natural Killer Cell Activity. 2007.

MLA (9th ed.) Citation

Lit, L.C, et al. In Vitro Effect of Malaysian Plants on Natural Killer Cell Activity. 2007.