Peña, R. d. l. (1974). Richard E. Bilsborrow. The preparation of an inventory of demographic data for social and economic planning. Chapel Hill, [N. C.]: Laboratories for Population Statistics, The University of North Carolina at Chapel Hill, 1974. 39 p. El Colegio de México A.C.
Cita Chicago Style (17a ed.)Peña, Raúl de la. Richard E. Bilsborrow. The Preparation of an Inventory of Demographic Data for Social and Economic Planning. Chapel Hill, [N. C.]: Laboratories for Population Statistics, The University of North Carolina at Chapel Hill, 1974. 39 P. El Colegio de México A.C, 1974.
Cita MLA (9a ed.)Peña, Raúl de la. Richard E. Bilsborrow. The Preparation of an Inventory of Demographic Data for Social and Economic Planning. Chapel Hill, [N. C.]: Laboratories for Population Statistics, The University of North Carolina at Chapel Hill, 1974. 39 P. El Colegio de México A.C, 1974.