Cita APA

Bryce, F. C., Clayton, J. K., Rand, R. J., Beck, I., Farquharson, D. I., & Jones, S. E. (1990). General practitioner obstetrics in Bradford.

Citación estilo Chicago

Bryce, F C., J K. Clayton, R J. Rand, I. Beck, D I. Farquharson, y S E. Jones. General Practitioner Obstetrics in Bradford. 1990.

Cita MLA

Bryce, F C., et al. General Practitioner Obstetrics in Bradford. 1990.