Pujol, R., & Solano, E. (2011). SOLID WASTE RECYCLIN IN COSTA RICA: BALANCE AND PERSPECTIVES. Universidad de Costa Rica.
Cita Chicago (17th ed.)Pujol, Rosendo, i Eric Solano. SOLID WASTE RECYCLIN IN COSTA RICA: BALANCE AND PERSPECTIVES. Universidad de Costa Rica, 2011.
Cita MLA (9th ed.)Pujol, Rosendo, i Eric Solano. SOLID WASTE RECYCLIN IN COSTA RICA: BALANCE AND PERSPECTIVES. Universidad de Costa Rica, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.