APA引文

Pernia, E. M. (1974). The Philippine urban structure. s.n.].

芝加哥风格引文

Pernia, Ernesto M. The Philippine Urban Structure. [S.l: s.n.], 1974.

MLA引文

Pernia, Ernesto M. The Philippine Urban Structure. s.n.], 1974.

警告：这些引文格式不一定是100％准确.