APA (7th ed.) Citation

Xu, M., Luo, X., & Davis, J. (2013). The label free picomolar detection of insulin in blood serum.

Chicago Style (17th ed.) Citation

Xu, M., X. Luo, and J. Davis. The Label Free Picomolar Detection of Insulin in Blood Serum. 2013.

MLA (9th ed.) Citation

Xu, M., et al. The Label Free Picomolar Detection of Insulin in Blood Serum. 2013.

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