Cita APA

Vetter, K. M., Barnes, R., Oberle, M. W., Rosero Bixby, L., & Schachter, J. (1990). Seroepidemiology of Chlamydia in Costa Rica.

Chicago Style Citation

Vetter, Kathleen M., R.C Barnes, Mark W. Oberle, Luis Rosero Bixby, i Juluis Schachter. Seroepidemiology of Chlamydia in Costa Rica. 1990.

Cita MLA

Vetter, Kathleen M., et al. Seroepidemiology of Chlamydia in Costa Rica. 1990.