Balmaceda, M. C. D. (2013). Ingenium 2013: Timeless strength, engineered to last. UP Alumni Engineers.
Dyfyniad Arddull ChicagoBalmaceda, Ma. Concepcion DS. Ingenium 2013: Timeless Strength, Engineered to Last. Diliman, Quezon City: UP Alumni Engineers, 2013.
Dyfyniad MLABalmaceda, Ma. Concepcion DS. Ingenium 2013: Timeless Strength, Engineered to Last. UP Alumni Engineers, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.