APA (7th ed.) Citation

Philippine Textile Research Institute. (1971). PTRI standard. -- no. 1 (1971)-. National Science Development Board.

Chicago Style (17th ed.) Citation

Philippine Textile Research Institute. PTRI Standard. -- No. 1 (1971)-. Taguig, Rizal: National Science Development Board, 1971.

MLA (9th ed.) Citation

Philippine Textile Research Institute. PTRI Standard. -- No. 1 (1971)-. National Science Development Board, 1971.

Warning: These citations may not always be 100% accurate.