Gaya APA
Nolen-Hoeksema, S. et al (2009).
Atkinson & Hilgard's Introduction to Psychology (15th Edition).
United Kingdom:
Cengage Learning EMEA.
Gaya MLA
Nolen-Hoeksema, Susan. et al.
"Atkinson & Hilgard's Introduction to Psychology".
15th Edition
United Kingdom:
Cengage Learning EMEA,
2009.
Text.