The Association for Computing Machinery is the pre-eminent professional body dealing in all aspects of information technology. This is a style guide for their reference and citation format. Note that there are some slight stylistic differences between the format for the magazine Communications of the ACM (per the style in EndNote) and the ACM conference proceedings reference format (per the style in the ACM conference proceedings template). This document will describe the Communications of the ACM style. In practice, adherence to a single, consistent style is satisfactory. References Section
The References section appears at the end of the paper. All references appear alphabetically by the lead author’s last name and are numbered consecutively. A clear header should be used to indicate the start of the References. Example: References
1.Bless, H. The Interplay of Affect and Cognition. in Forgas, J.P. ed. Feeling and Thinking: The Role of Affect in Social Cognition, Maison des Sciences de l'Homme and Cambridge University Press, Cambridge, 2000, 201-222. 2.Garcia, A.C.B. and Howard, H.C. Acquiring design knowledge through design decision justification. Artificial Intelligence for Engineering Design, Analysis and Manufacturing, 6 (1). 59-71. Citation
As you write your report, you will cite your references. A citation to a reference in the body of the text is indicated by a bracketed number corresponding to the reference number in the References section. Example:
During high stress periods, individuals should focus on the situation-specific tasks rather than rely on general knowledge structures. 
A complete reference should contain the name(s) of the author(s) and/or editor(s), the title of the article, the name of the book or conference proceedings where appropriate, and bibliographic information about the article such as the name...