Pernia, E. M. (1980). A note on migration and fertility. School of Economics, University of the Philippines.
Citazione stile Chigago Style (17a edizione)Pernia, Ernesto M. A Note on Migration and Fertility. [Quezon City]: School of Economics, University of the Philippines, 1980.
Citatione MLA (9a ed.)Pernia, Ernesto M. A Note on Migration and Fertility. School of Economics, University of the Philippines, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.