Giannakopoulos, G., Tzavara, C., Dimitrakaki, C., Kolaitis, G., Rotsika, V., & Tountas, Y. (2009). The factor structure of the Strengths and Difficulties Questionnaire (SDQ) in Greek adolescents. BioMed Central.

Giannakopoulos, George, Chara Tzavara, Christine Dimitrakaki, Gerasimos Kolaitis, Vasiliki Rotsika, و Yannis Tountas. The Factor Structure of the Strengths and Difficulties Questionnaire (SDQ) in Greek Adolescents. BioMed Central, 2009.

Giannakopoulos, George, et al. The Factor Structure of the Strengths and Difficulties Questionnaire (SDQ) in Greek Adolescents. BioMed Central, 2009.