Reference Style
Text: All citations in the text should refer to:
1. Single author: the author's name (without initials, unless there is ambiguity) and the year of
publication;
2. Two to six authors: at first citation, list all authors' names with "&" separating the last two authors
and the year of publication; in subsequent citations for three or more authors, use author et al. in
the text;
3. More than six authors: at first citation list the first six authors followed by et al. and the
year of publication. In subsequent citations use author et al. Citations may be made directly (or
parenthetically). Groups of references should be listed first alphabetically, then chronologically.