For direct quotes, use quotation marks and include the page number(s). If including the authors, insert the number after the authors, and the page number(s) goes after the quote.
Bryant and Knights (1) stated that "severe overdose of aspirin can be dramatic and potentially fatal, especially in children" (p1084).
Leask (1) stated that there is a "link between alcohol availability and negative social outcomes" and having more off-licences will just increase the problem (pA:3).