ABDEL KHALEK AWAD, Nadia; 						KHATTAB OMAR, Boshra.
 The style of positive and negative thinking and its relation to the psychological hardness of university students.
<strong>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</strong>, [S.l.], v. 24, n. 11, p. 905-941, apr. 2019.
ISSN 1817-6798. Available at: &lt;<a href="https://jtuh.tu.edu.iq/index.php/hum/article/view/440" target="_new">https://jtuh.tu.edu.iq/index.php/hum/article/view/440</a>&gt;. Date accessed: 22 july 2024.
doi: <a href="http://dx.doi.org/10.25130/hum.v24i11.440">http://dx.doi.org/10.25130/hum.v24i11.440</a>.