Edwards TP, Yopp JM, Park EM, Deal A, Biesecker BB, Rosenstein DL. Widowed parenting self-efficacy scale: a new measure. Death Stud. 2018 Apr;42(4):247-53. doi: 10.1080/07481187.2017.1339743
Graham JE, Rouse M, Twiss J, McKenna SP, Vidalis AA. Greek adaptation and validation of the Ankylosing Spondylitis Quality of Life (ASQoL) measure. Hippokratia. 2015;19(2):119-24.