APA (7 वां संस्करण) प्रशस्ति पत्र

Philippines (Republic). Bureau of the Census and Statistics. (1971). Directory of large establishments: 1967 economic census. [s.n.].

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Philippines (Republic). Bureau of the Census and Statistics. Directory of Large Establishments: 1967 Economic Census. Manila: [s.n.], 1971.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Philippines (Republic). Bureau of the Census and Statistics. Directory of Large Establishments: 1967 Economic Census. [s.n.], 1971.