APA (7e ed.) Bronvermelding

Philippines Bureau of Tourism Services & Philippines. (1979). Rules and regulations governing the business of travel and tour agencies, travel representatives and tour guides. The Bureau.

Chicago (17e ed.) Bronvermelding

Philippines Bureau of Tourism Services en Philippines. Rules and Regulations Governing the Business of Travel and Tour Agencies, Travel Representatives and Tour Guides. Manila: The Bureau, 1979.

MLA (9e ed.) Bronvermelding

Philippines Bureau of Tourism Services en Philippines. Rules and Regulations Governing the Business of Travel and Tour Agencies, Travel Representatives and Tour Guides. The Bureau, 1979.