APA引文

(1970). Population density by province 1970: Mindanao. s.n.].

芝加哥风格引文

Population Density by Province 1970: Mindanao. [Manila: s.n.], 1970.

MLA引文

Population Density by Province 1970: Mindanao. s.n.], 1970.

警告：这些引文格式不一定是100％准确.