Philippine Sugar Institute Library. Research studies undertaken by Philsugin, 1953-1971. [s.n.
芝加哥风格引文Philippine Sugar Institute Library. Research Studies Undertaken by Philsugin, 1953-1971. Quezon City: [s.n.
MLA引文Philippine Sugar Institute Library. Research Studies Undertaken by Philsugin, 1953-1971. [s.n.
警告：这些引文格式不一定是100％准确.