Citazione Stile APA (7a Edizione)

Philippines Department of Tourism.National Capital Region. (1991). 1991 tourism situation report: NCR. Department of Tourism.

Citazione stile Chigago Style (17a edizione)

Philippines Department of Tourism.National Capital Region. 1991 Tourism Situation Report: NCR. Manila: Department of Tourism, 1991.

Citatione MLA (9a ed.)

Philippines Department of Tourism.National Capital Region. 1991 Tourism Situation Report: NCR. Department of Tourism, 1991.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.