The Availability Range of Motivation Proverbs in "The Yemeni Treasure of Proverbs" book and their Possibility of Enriching the Psychological Courses in the Yemeni Universities. hesj [Internet]. 2019 Dec. 7 [cited 2026 Aug. 1];1(7):282-311. Available from: http://hesj.org/ojs/index.php/hesj/article/view/77