Cita APA (7a ed.)

Oberle, M. W., Sosa, D., Madrigal Pana, J., Becker, S., Morris, L., & Rosero-Bixby, L. Contraceptive use and fertility in Costa Rica, 1986.

Cita Chicago Style (17a ed.)

Oberle, Mark W., Doris Sosa, Johnny Madrigal Pana, Stan Becker, Leo Morris, y Luis Rosero-Bixby. Contraceptive Use and Fertility in Costa Rica, 1986.

Cita MLA (9a ed.)

Oberle, Mark W., et al. Contraceptive Use and Fertility in Costa Rica, 1986.