APA

Spencer S. N., . (2006). ETRA 2006. New York, NY: The Association for Computing Machinery, Inc.

Chicago

Spencer Stephen N, . 2006. ETRA 2006. New York, NY: The Association for Computing Machinery, Inc.

Harvard

Spencer S. N., . (2006). ETRA 2006. New York, NY: The Association for Computing Machinery, Inc.

MLA

Spencer Stephen N, . ETRA 2006. New York, NY: The Association for Computing Machinery, Inc. 2006.