Cita APA (7th ed.)

(1990). Study on regional travel in the Philippines 1990. DOT/AIT.

Cita Chicago (17th ed.)

Study on Regional Travel in the Philippines 1990. [Quezon City]: DOT/AIT, 1990.

Cita MLA (9th ed.)

Study on Regional Travel in the Philippines 1990. DOT/AIT, 1990.