Hellman, H. (1975). Psychosocial and cultural determinants of population policy. Interdisciplinary Communications Program.
Cita Chicago (17th ed.)Hellman, Hal. Psychosocial and Cultural Determinants of Population Policy. Washington: Interdisciplinary Communications Program, 1975.
Cita MLA (9th ed.)Hellman, Hal. Psychosocial and Cultural Determinants of Population Policy. Interdisciplinary Communications Program, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.