Cita APA (7th ed.)

Greep, R. O. (1963). Human fertility and population problems. Schenkman.

Cita Chicago (17th ed.)

Greep, Roy O. Human Fertility and Population Problems. Cambridge, Mass: Schenkman, 1963.

Cita MLA (9th ed.)

Greep, Roy O. Human Fertility and Population Problems. Schenkman, 1963.