Gaya APA

Graik, P, I., Salthoure, T, A. (2008). The Handbook of aging and cognition (3rd ed). New York: Psychology Press.

Gaya MLA

Graik, Pergus, I.M.., Salthoure, Timothy, A.. "The Handbook of aging and cognition". 3rd ed New York: Psychology Press, 2008. Text.