Ateneo de Manila University (Quezon City) Institute of Philippine Culture, Philippines National Irrigation Administration, & Delos Reyes, R. P. (1980). Communal gravity systems: Four case studies. Institute of Philippine Culture, Ateneo de Manila University.
芝加哥风格引文Ateneo de Manila University (Quezon City) Institute of Philippine Culture, Philippines National Irrigation Administration, 与 Romana P. Delos Reyes. Communal Gravity Systems: Four Case Studies. Quezon City: Institute of Philippine Culture, Ateneo de Manila University, 1980.
MLA引文Ateneo de Manila University (Quezon City) Institute of Philippine Culture, et al. Communal Gravity Systems: Four Case Studies. Institute of Philippine Culture, Ateneo de Manila University, 1980.