Gaya APA

Halgin, R, P, H, R, P. (2007). Abnormal psychology : clinical perspectives on psychological dsorders.-- . America: McGraw-Hill.

Gaya MLA

Halgin, Richard, P., Halgin,, Richard, P.. "Abnormal psychology : clinical perspectives on psychological dsorders.--". America: McGraw-Hill, 2007. Buku.