Pulido, P. N. (1980). Pag-unlad at pagbabago = Development and progress socio-economic problems. Phil. Book Co.
Chicago-referens (17:e uppl.)Pulido, Paz N. Pag-unlad at Pagbabago = Development and Progress Socio-economic Problems. Manila: Phil. Book Co, 1980.
MLA-referens (9:e uppl.)Pulido, Paz N. Pag-unlad at Pagbabago = Development and Progress Socio-economic Problems. Phil. Book Co, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.