Joaquin, A. (1997). Gov't engineers scored for wrong dike design. Philippine Daily Inquirer.
Dyfyniad Arddull ChicagoJoaquin, Ansbert. "Gov't Engineers Scored for Wrong Dike Design." Philippine Daily Inquirer 1997.
Dyfyniad MLAJoaquin, Ansbert. "Gov't Engineers Scored for Wrong Dike Design." Philippine Daily Inquirer, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.