APA استشهاد

B.M.Sharma & A.S.Sharma. Encyclopaedia of education in 21st century: Physics education. Commonwealth.

استشهاد بنمط شيكاغو

B.M.Sharma و A.S.Sharma. Encyclopaedia of Education in 21st Century: Physics Education. New Delhi: Commonwealth.

MLA استشهاد

B.M.Sharma و A.S.Sharma. Encyclopaedia of Education in 21st Century: Physics Education. Commonwealth.