ASA uses parenthetical citations in text, with a complete list of references included at the end of the paper.
(Lastname Year)
Example: (Foucault 1978)
... Giddens (1991) argues that ...
... Orol (2010:1).
Page numbers should be included for direct quotes or references to specific passages.
... (Danziger and Ratner 2010).
... young people themselves (Shanahan, Porfeli, and Mortimer 2005).
Later: ... (Mortimer et al. 2005).
... (Armstrong et al. 2014).