Varela, F. (1999). RP real estate sector, bagsak pa rin - BSP. Kabayan.
芝加哥风格引文Varela, Friedrich. "RP Real Estate Sector, Bagsak Pa Rin - BSP." Kabayan 1999.
MLA引文Varela, Friedrich. "RP Real Estate Sector, Bagsak Pa Rin - BSP." Kabayan, 1999.
警告：这些引文格式不一定是100％准确.