APA引文

(1989). Study on regional travel in the Philippines 1989. DOT/AIT.

芝加哥风格引文

Study on Regional Travel in the Philippines 1989. [Quezon City]: DOT/AIT, 1989.

MLA引文

Study on Regional Travel in the Philippines 1989. DOT/AIT, 1989.

警告：这些引文格式不一定是100％准确.