Smallwood, J., Obonsawin, M., Baracaia, S., Reid, H., O'Connor, R., & Heim, D. (2003).
The relationship between rumination, dysphoria and self-referent thinking: Some preliminary findings.
Imagination, cognition and personality, 22(4), 317-342. doi:10.2190/2N80-AVM3-4A23-LEAJ.