Grady, M. L. (2020). 20 biggest mistakes principals make and how to avoid them. Corwin Press.
استشهاد بنمط شيكاغوGrady, Marilyn L. 20 Biggest Mistakes Principals Make and How to Avoid Them. Corwin Press, 2020.
MLA استشهادGrady, Marilyn L. 20 Biggest Mistakes Principals Make and How to Avoid Them. Corwin Press, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.