APA

b.lahey b., . (2004). psychology an introduction. new york: mc graw hill.

Chicago

b.lahey benjamin, . 2004. psychology an introduction. new york: mc graw hill.

Harvard

b.lahey b., . (2004). psychology an introduction. new york: mc graw hill.

MLA

b.lahey benjamin, . psychology an introduction. new york: mc graw hill. 2004.