Annual Report (Association for the Improvement of Geometrical Teaching). JSTOR.
استشهاد بنمط شيكاغوAnnual Report (Association for the Improvement of Geometrical Teaching). JSTOR.
MLA استشهادAnnual Report (Association for the Improvement of Geometrical Teaching). JSTOR.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.