Cruz, R. V. O. (1990). Landuse suitability assessment and land capability classification in Ibulao watershed, Philippines. UMI Dissertation Services.
芝加哥风格引文Cruz, Rex Victor Oafallas. Landuse Suitability Assessment and Land Capability Classification in Ibulao Watershed, Philippines. Ann Arbor, Mich: UMI Dissertation Services, 1990.
MLA引文Cruz, Rex Victor Oafallas. Landuse Suitability Assessment and Land Capability Classification in Ibulao Watershed, Philippines. UMI Dissertation Services, 1990.
警告：这些引文格式不一定是100％准确.