Creep, R. O. (1963). Human fertility and population problems: Proceedings of the seminars. Schenkman Pub.
Citazione stile Chigago Style (17a edizione)Creep, Roy Orval. Human Fertility and Population Problems: Proceedings of the Seminars. Cambridge, MA: Schenkman Pub, 1963.
Citatione MLA (9a ed.)Creep, Roy Orval. Human Fertility and Population Problems: Proceedings of the Seminars. Schenkman Pub, 1963.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.