Gaya APA
Vallin, J. et al (2006).
Demography Analysis and Synthesis : a Treatise in Population section II (section II).
Amsterdam:
Elsevier Inc.
Gaya MLA
Vallin, Jacques. et al.
"Demography Analysis and Synthesis : a Treatise in Population section II".
section II
Amsterdam:
Elsevier Inc,
2006.
ML.