Philippines. Department of Trade and Tourism. (1972). Integrated development and promotion of Philippine tourism and foreign trade: Background material. The Department.
芝加哥风格引文Philippines. Department of Trade and Tourism. Integrated Development and Promotion of Philippine Tourism and Foreign Trade: Background Material. [Manila]: The Department, 1972.
MLA引文Philippines. Department of Trade and Tourism. Integrated Development and Promotion of Philippine Tourism and Foreign Trade: Background Material. The Department, 1972.
警告：这些引文格式不一定是100％准确.