Smith, P. C. (1975). Numbers of children ever born and still living, and patterns of child survivorship: Regional and urban-rural, May 1973. University of the Philippines, Population Institute.
Cita Chicago (17th ed.)Smith, Peter Colin. Numbers of Children Ever Born and Still Living, and Patterns of Child Survivorship: Regional and Urban-rural, May 1973. [Manila]: University of the Philippines, Population Institute, 1975.
Cita MLA (9th ed.)Smith, Peter Colin. Numbers of Children Ever Born and Still Living, and Patterns of Child Survivorship: Regional and Urban-rural, May 1973. University of the Philippines, Population Institute, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.