Philippines. Department of Tourism. Planning Services. Plans and Programs Division. (1993). Study on regional travel in the Philippines: Household survey on travel patterns of Philippine residents 1993. DOT/AIT.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Philippines. Department of Tourism. Planning Services. Plans and Programs Division. Study on Regional Travel in the Philippines: Household Survey on Travel Patterns of Philippine Residents 1993. [Quezon City]: DOT/AIT, 1993.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Philippines. Department of Tourism. Planning Services. Plans and Programs Division. Study on Regional Travel in the Philippines: Household Survey on Travel Patterns of Philippine Residents 1993. DOT/AIT, 1993.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.