Cita APA (7a ed.)

Flynn, A. M., & Brooks, M. (1988). A manual of natural family planning. Unwin Paperbacks.

Cita Chicago Style (17a ed.)

Flynn, Anna M., y Melissa Brooks. A Manual of Natural Family Planning. London ; Sydney: Unwin Paperbacks, 1988.

Cita MLA (9a ed.)

Flynn, Anna M., y Melissa Brooks. A Manual of Natural Family Planning. Unwin Paperbacks, 1988.