Cita APA (7th ed.)

Harrison, P., & Rowley, J. (1984). Human numbers, human needs. International Planned Parenthood Federation.

Cita Chicago (17th ed.)

Harrison, Paul, i John Rowley. Human Numbers, Human Needs. London: International Planned Parenthood Federation, 1984.

Cita MLA (9th ed.)

Harrison, Paul, i John Rowley. Human Numbers, Human Needs. International Planned Parenthood Federation, 1984.