“Contribution of Some Positive Variables (Happiness, Optimism, Hope) to the Level of Psychological Health in the Practitioners of the Nursing Profession in Algeria”. Journal Of Educational and Psychological Researches 17, no. 65 (February 28, 2022): 171–189. Accessed May 5, 2025. https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/1055.