Cita APA (7a ed.)

National Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, volume XIII. NAST.

Cita Chicago Style (17a ed.)

National 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.

Cita MLA (9a ed.)

National Academy of Science and Technology (Philippines). Transactions of the National Academy of Science and Technology, Republic of the Philippines 1991, Volume XIII. NAST.