I've highlighted the main differences. Double-check the 7th edition before submitting: •Title page •Abstract are optional •Headings for topics •The words "Running Heading" before the running heading are no longer required •The use of “they” as singular for a person whose gender is unknown or irrelevant •Use "Person-First" language whenever possible. For instance, “a man with epilepsy” is generally preferable to “an epileptic” or “an epileptic man.” •Only one space after a period •Sources with three + authors are now attributed using the name of the first author followed by “et al.” If two sources have the same author listed, add both that author and the next to distinguish between the two