Cita APA (7a ed.)

Eckholm, E. P., & Newland, K. (1977). Health: The family planning factor. Worldwatch Institute.

Cita Chicago Style (17a ed.)

Eckholm, Erik P., y Kathleen Newland. Health: The Family Planning Factor. Washington, DC: Worldwatch Institute, 1977.

Cita MLA (9a ed.)

Eckholm, Erik P., y Kathleen Newland. Health: The Family Planning Factor. Worldwatch Institute, 1977.