Cita APA (7th ed.)

Subrahmanyam, N., & Lal, . B. (1986). A Textbook Of Sound (1st.). Vikas Publishing House Pvt Ltd.

Cita Chicago (17th ed.)

Subrahmanyam, N., i Brij Lal. A Textbook Of Sound. 1st. New Delhi: Vikas Publishing House Pvt Ltd, 1986.

Cita MLA (9th ed.)

Subrahmanyam, N., i Brij Lal. A Textbook Of Sound. 1st. Vikas Publishing House Pvt Ltd, 1986.