Direct tax bulletin. Vol.14, 1975. Nirikshan Nideshalaya.
Chicago Style aipamenaDirect Tax Bulletin. Vol.14, 1975. New Delhi: Nirikshan Nideshalaya.
MLA aipamenaDirect Tax Bulletin. Vol.14, 1975. Nirikshan Nideshalaya.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.