APA
Omran A., Standley C., . (1981). Family formation patterns and health : further studies : an international collaborative study in Colombia, Egypt, Pakistan and the Syrian Arab Republic. Geneva: World Health Organization.
Chicago
Omran A.R, Standley C.C, . 1981. Family formation patterns and health : further studies : an international collaborative study in Colombia, Egypt, Pakistan and the Syrian Arab Republic. Geneva: World Health Organization.
Harvard
Omran A., Standley C., . (1981). Family formation patterns and health : further studies : an international collaborative study in Colombia, Egypt, Pakistan and the Syrian Arab Republic. Geneva: World Health Organization.
MLA
Omran A.R, Standley C.C, . Family formation patterns and health : further studies : an international collaborative study in Colombia, Egypt, Pakistan and the Syrian Arab Republic. Geneva: World Health Organization. 1981.