Cita APA (7th ed.)

Subrahmanyam, N., & Lal, . B. (1997). A Textbook Of Sound (2nd revised ed.). vikas publishing house pvt ltd.

Cita Chicago (17th ed.)

Subrahmanyam, N., i Brij Lal. A Textbook Of Sound. 2nd revised ed. New Delhi: vikas publishing house pvt ltd, 1997.

Cita MLA (9th ed.)

Subrahmanyam, N., i Brij Lal. A Textbook Of Sound. 2nd revised ed. vikas publishing house pvt ltd, 1997.