National Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, volume XIII. NAST.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, Volume XIII. Taguig, Metro Manila: NAST.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, Volume XIII. NAST.
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