MLA
Porta, Miquel, et al. Trends In Citations to Books On Epidemiological and Statistical Methods In the Biomedical Literature. 2013. https://doi.org/10.17615/vd49-ne24
APA
Porta, M., Vandenbroucke, J., Ioannidis, J., Sanz, S., Fernandez, E., Bhopal, R., Morabia, A., Victora, C., & Lopez, T. (2013). Trends in Citations to Books on Epidemiological and Statistical Methods in the Biomedical Literature. https://doi.org/10.17615/vd49-ne24
Chicago
Porta, Miquel, Jan P Vandenbroucke, John P. A Ioannidis, Sergio Sanz, Esteve Fernandez, Raj Bhopal, Alfredo Morabia et al. 2013. Trends In Citations to Books On Epidemiological and Statistical Methods In the Biomedical Literature. https://doi.org/10.17615/vd49-ne24