National Statistical Information Center. (2006). 2006 Philippine statistical yearbook. The National Statistical Information Center.
芝加哥风格引文National Statistical Information Center. 2006 Philippine Statistical Yearbook. Makati City: The National Statistical Information Center, 2006.
MLA引文National Statistical Information Center. 2006 Philippine Statistical Yearbook. The National Statistical Information Center, 2006.
警告：这些引文格式不一定是100％准确.