APA

Clarke C. L. A., ACM Special Interest Group on Information Retrieval & International Conference on Research and Development in Information Retrieval. (2007). Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY: ACM.

Chicago

Clarke Charles L A, ACM Special Interest Group on Information Retrieval and International Conference on Research and Development in Information Retrieval. 2007. Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY: ACM.

Harvard

Clarke C. L. A., ACM Special Interest Group on Information Retrieval and International Conference on Research and Development in Information Retrieval. (2007). Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY: ACM.

MLA

Clarke Charles L A, ACM Special Interest Group on Information Retrieval and International Conference on Research and Development in Information Retrieval. Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY: ACM. 2007.