For all of the studies that you mention, you need to add parentheses with the year of the study after the author's name. Kim (2012).<br /><br />For the tables, according to APA style, there should be a space before and after the = sign. I could not access the tables to make the change. So, the labels of the curves should technically be in the format M = 2.4 instead of M=2.4.<br /><br />For the results of the study, I changed the procedure steps to be past tense, and made the implications present tense. (i.e., Therefore the optimum slot width is 1.0 mm)<br /><br />Please let me know if you have any questions or want me to take a look at/change anything else.&nbsp;