KHALIL, Manar.
 The Effect of Using the Six-dimensional Strategy (PDEODE) in the Collection of Third-average Students and Providing them with Mathematical Concepts.
<strong>Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية</strong>, [S.l.], v. 27, n. 1, p. 344-327, jan. 2020.
ISSN 1817-6798. Available at: &lt;<a href="https://jtuh.tu.edu.iq/index.php/hum/article/view/931" target="_new">https://jtuh.tu.edu.iq/index.php/hum/article/view/931</a>&gt;. Date accessed: 16 may 2024.
doi: <a href="http://dx.doi.org/10.25130/hum.v27i1.931">http://dx.doi.org/10.25130/hum.v27i1.931</a>.