APA (7th ed.) Zitazioa

KEYFITZ, N. (1968). Introduction to the mathematics of population; 2nd ed. Addison-Wesley.

Chicago Style (17th ed.) Zitazioa

KEYFITZ, Nathan. Introduction to the Mathematics of Population; 2nd Ed. Reading, Mass: Addison-Wesley, 1968.

MLA (9th ed.) Zitazioa

KEYFITZ, Nathan. Introduction to the Mathematics of Population; 2nd Ed. Addison-Wesley, 1968.