MLA

Alexopoulos, George, et al. Guide to Assessment Scales In Major Depressive Disorder. Springer International Publishing, 2014.

APA

Alexopoulos, G., Kasper, S., Moreno, C., & Möller, H. (2014). Guide to Assessment Scales in Major Depressive Disorder. Springer International Publishing.

Chicago

Alexopoulos, George, Siegfried Kasper, Carmen Moreno, and Hans-Jürgen Möller. Guide to Assessment Scales In Major Depressive Disorder. : Springer International Publishing, 2014.