APA استشهاد

B.R.Gupta & Vandana Singhal. Fundamentals of electric machines. New Age.

استشهاد بنمط شيكاغو

B.R.Gupta و Vandana Singhal. Fundamentals of Electric Machines. New Delhi: New Age.

MLA استشهاد

B.R.Gupta و Vandana Singhal. Fundamentals of Electric Machines. New Age.