APA استشهاد

Krishna Iyer, R. (1977). Some factors related to underachievement in mathematics of secondary school students.

استشهاد بنمط شيكاغو

Krishna Iyer, R. Some Factors Related to Underachievement in Mathematics of Secondary School Students. 1977.

MLA استشهاد

Krishna Iyer, R. Some Factors Related to Underachievement in Mathematics of Secondary School Students. 1977.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.