Salas, J. M. I. S. (2012). Consequences of withdrawal: Free condoms and birth rates in the Philippines. School of Economics, University of the Philippines.
Cita Chicago (17th ed.)Salas, John Michael Ian S. Consequences of Withdrawal: Free Condoms and Birth Rates in the Philippines. Quezon City: School of Economics, University of the Philippines, 2012.
Cita MLA (9th ed.)Salas, John Michael Ian S. Consequences of Withdrawal: Free Condoms and Birth Rates in the Philippines. School of Economics, University of the Philippines, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.