Varela, R. M. (2000). What is wrong with the 1997 GSIS Act? PIDS Development Research News.
Citazione stile Chigago Style (17a edizione)Varela, Rustico M. "What Is Wrong with the 1997 GSIS Act?" PIDS Development Research News 2000.
Citatione MLA (9a ed.)Varela, Rustico M. "What Is Wrong with the 1997 GSIS Act?" PIDS Development Research News, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.