Cruz, R. S., & Zulueta, R. A. (1978). The Philippine principalia as contributors to national socio-economic development: Araneta-Yulo & Delgado). University of the Philippines, Manila.
Citazione stile Chigago Style (17a edizione)Cruz, Ruby Santos, e Rita Alfon Zulueta. The Philippine Principalia as Contributors to National Socio-economic Development: Araneta-Yulo & Delgado). Manila: University of the Philippines, Manila, 1978.
Citatione MLA (9a ed.)Cruz, Ruby Santos, e Rita Alfon Zulueta. The Philippine Principalia as Contributors to National Socio-economic Development: Araneta-Yulo & Delgado). University of the Philippines, Manila, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.