Cita APA (7th ed.)

Smith, P. C., Virina, N., & Zablan, Z. C. (1975). Preliminary estimates of national-level mortality, 1960, 1968 and 1973, and mortality differentials around 1970. University of the Philippines System, Population Institute.

Cita Chicago (17th ed.)

Smith, Peter Colin, Noel Virina, i Zelda C. Zablan. Preliminary Estimates of National-level Mortality, 1960, 1968 and 1973, and Mortality Differentials Around 1970. [Manila]: University of the Philippines System, Population Institute, 1975.

Cita MLA (9th ed.)

Smith, Peter Colin, et al. Preliminary Estimates of National-level Mortality, 1960, 1968 and 1973, and Mortality Differentials Around 1970. University of the Philippines System, Population Institute, 1975.