Philippine Printing Technical Foundation. (1990). Graphic arts directory. Published by the Philippine Printing Technical Foundation.
芝加哥风格引文Philippine Printing Technical Foundation. Graphic Arts Directory. Manila: Published by the Philippine Printing Technical Foundation, 1990.
MLA引文Philippine Printing Technical Foundation. Graphic Arts Directory. Published by the Philippine Printing Technical Foundation, 1990.
警告：这些引文格式不一定是100％准确.