Cita APA (7th ed.)

Hoff and Overgaard & World Tourism Organization. (1992). Tourism master plan for the Philippines. World Tourism Organization.

Cita Chicago (17th ed.)

Hoff and Overgaard i World Tourism Organization. Tourism Master Plan for the Philippines. [Madridn]: World Tourism Organization, 1992.

Cita MLA (9th ed.)

Hoff and Overgaard i World Tourism Organization. Tourism Master Plan for the Philippines. World Tourism Organization, 1992.