Web 2.0 authoring forms such as wikis and blogs, social bookmarking, and audio and video podcasting pose a challenge to academic authorship traditions. This paper reviews the provisions made in major academic referencing and citation style guides for acknowledging content and ideas that may be published using these new web authoring forms. It offers an overview of features of web 2.0 authoring forms and explores concepts of authoring that can help academics to understand the challenges of working with these forms. It provides examples of referencing and citation in scholarly and scientific communication, and concludes that the conceptual basis of referencing and citation as expressed in current systems and standards needs reform in order to bring academic integrity to the use of these new forms of authorship. (Contains 2 tables.)