Cita APA

Larsen, S. A., Oberle, M. W., Sánchez Braverman, J. M., Rosero Bixby, L., & Vetter, K. M. (1991). A Population-based Serosurveillance of Syphilis in Costa Rica.

Chicago Style Citation

Larsen, Sandra A., Mark W. Oberle, Juana M. Sánchez Braverman, Luis Rosero Bixby, i Kathleen M. Vetter. A Population-based Serosurveillance of Syphilis in Costa Rica. 1991.

Cita MLA

Larsen, Sandra A., et al. A Population-based Serosurveillance of Syphilis in Costa Rica. 1991.