Using multiple in-text references at the same point
Provide in chronologic sequence from earliest to latest, separated by semicolons - sequence by month those published in same year or, if this information isn't available, alphabetically by author names
. . .the main proponents (Mardis and Johnson 1972; Mardis and Wyatt 1972; Baudino F 1978; Baudino K 1978; Park et al. 1980; Ury et al. 1981; Zupa 1985) concluded that. . .
Example in a ScienceDirect article:
![[ example ]](//s3.amazonaws.com/libapps/customers/2793/images/CSE_in_text.png)
http://www.sciencedirect.com/science/article/pii/S1055790316300914