“Contribution of Some Positive Variables (Happiness, Optimism, Hope) to the Level of Psychological Health in the Practitioners of the Nursing Profession in Algeria” (2022) Journal Of Educational and Psychological Researches, 17(65), pp. 171–189. Available at: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/1055 (Accessed: 5 May 2025).