APA (7th ed.) Citation

Chua, P. S. (2009). Vitamin D. Malaya.

Chicago Style (17th ed.) Citation

Chua, Philip S. "Vitamin D." Malaya 2009.

MLA (9th ed.) Citation

Chua, Philip S. "Vitamin D." Malaya, 2009.

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