Trigg, P. (1996). Leisure and tourism GNVQ: Advanced textbook. Butterworth Heinemann.
芝加哥风格引文Trigg, Peter. Leisure and Tourism GNVQ: Advanced Textbook. Oxford: Butterworth Heinemann, 1996.
MLA引文Trigg, Peter. Leisure and Tourism GNVQ: Advanced Textbook. Butterworth Heinemann, 1996.
警告：这些引文格式不一定是100％准确.