Pelin Yazgan, Zeynep Şimşek, İsmihan Orhan, Lyold Beachy, Yaşar Özkul, and Mehmet Ali Kurcer, “The Reliability and Cross-Cultured Adaptation of the Boston Questionnaire; in Turkish Illiterate Patients”, Archives of Rheumatology, vol. 24, no. 1, pp. 010–016, Mar. 2009.