Gregorio, G. L. (2000). Research methods and technical writing in agriculture. Rex Book Store.
芝加哥风格引文Gregorio, Geronimo Lozada. Research Methods and Technical Writing in Agriculture. Manila: Rex Book Store, 2000.
MLA引文Gregorio, Geronimo Lozada. Research Methods and Technical Writing in Agriculture. Rex Book Store, 2000.
警告：这些引文格式不一定是100％准确.