Acknowledgments. This is an optional section. Thank people who directly contributed to the paper, by providing data, assisting with some part of the analysis, proofreading, typing, etc. It is not a dedication so don't thank Mom and Dad for bringing you into the world, or your roommate for making your coffee. References.Within the text, cite references by author and year unless instructed otherwise, for example "Comrie (1999) stated that ..." or "several studies have found that xis greater than y (Comrie 1999; Smith 1999)." For two authors, list both names, and for three or more use the abbreviation "et al." (note the period) following the first name, for example "Comrie and Smith (1999)" or "Com- rie et al. (1999)." Attribute every idea that is not your own to avoid plagiarism.