Pollard, A. H., Yusuf, F., & Pollard, G. N. (1983). Demographic techniques (2nd ed.). Pergamon.
Cita Chicago Style (17a ed.)Pollard, Alfred Hurlstone, Farhat Yusuf, y G. N. Pollard. Demographic Techniques. 2nd ed. Sydney [etc.]: Pergamon, 1983.
Cita MLA (9a ed.)Pollard, Alfred Hurlstone, et al. Demographic Techniques. 2nd ed. Pergamon, 1983.
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