Gulf of Mexico. 60 percent of the continental United States drains into the Gulf of Mexico. Since 1990, hurricanes and tropical storms have cost the region more than $100 billion in damages to homes and property and over 9,000 deaths. Coastal tourism and recreational activities employ over 620,000 people in the region, yielding over $9 billion in wages annually.
In citing such papers using the name-and-date system, also known as the Harvard system, a long string of names proves awkwardâwhich is why most journals recommend the use of et al., which is Latin for et alii or et aliae and means âand others.â.
Cite a source with three or more authors. A source with three to five authors. Cite all authors in your first citation. In all citations after the first, use the first author's name followed by et al. [no italics; period after al]