APA (7th ed.) Citation

Tay Sun, Lee Vernon J, Teoh Yee, & Tok Mei. (2011). Cost-effectiveness of different human papillomavirus vaccines in Singapore. BMC.

Chicago Style (17th ed.) Citation

Tay Sun, Lee Vernon J, Teoh Yee, and Tok Mei. Cost-effectiveness of Different Human Papillomavirus Vaccines in Singapore. BMC, 2011.

MLA (9th ed.) Citation

Tay Sun, et al. Cost-effectiveness of Different Human Papillomavirus Vaccines in Singapore. BMC, 2011.

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