APA (7th ed.) Citation

Bottini, N., Ronchetti, F., & Villa, M. P. (2000). MN blood groups and asthma onset. Lancet, 356(9228), 506. https://doi.org/10.1016/s0140-6736(05)74175-1

Chicago Style (17th ed.) Citation

Bottini, N., F. Ronchetti, and M P. Villa. "MN Blood Groups and Asthma Onset." Lancet 356, no. 9228 (2000): 506. https://doi.org/10.1016/s0140-6736(05)74175-1.

MLA (9th ed.) Citation

Bottini, N., et al. "MN Blood Groups and Asthma Onset." Lancet, vol. 356, no. 9228, 2000, p. 506, https://doi.org/10.1016/s0140-6736(05)74175-1.