Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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