APA aipamena

Smeeth, L., Hall, A. J., Rodrigues, L. C., Huang, X., Smith, P. G., & Fombonne, E. (2001). Measles, mumps, and rubella (MMR) vaccine and autism: Ecological studies cannot answer main question. BMJ Group.

Chicago Style aipamena

Smeeth, Liam, Andrew J. Hall, Laura C. Rodrigues, Xiangning Huang, Peter G. Smith, and Eric Fombonne. Measles, Mumps, and Rubella (MMR) Vaccine and Autism: Ecological Studies Cannot Answer Main Question. BMJ Group, 2001.

MLA aipamena

Smeeth, Liam, et al. Measles, Mumps, and Rubella (MMR) Vaccine and Autism: Ecological Studies Cannot Answer Main Question. BMJ Group, 2001.