Gupta, S. L., & Kumar, V. (1984). Practical Physics with Viva Voce: A text book for B.Sc. students of all Indian Universities / Vol. II G (12th enl. and rev. ed.). Pragati Prakashan.
Lua i Stíl Chicago (17ú heag.)Gupta, S. L., agus V. Kumar. Practical Physics with Viva Voce: A Text Book for B.Sc. Students of All Indian Universities / Vol. II G. 12th enl. and rev. ed. Meerut: Pragati Prakashan, 1984.
Lua MLA (9ú heag.)Gupta, S. L., agus V. Kumar. Practical Physics with Viva Voce: A Text Book for B.Sc. Students of All Indian Universities / Vol. II G. 12th enl. and rev. ed. Pragati Prakashan, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.