APA (7th ed.) Citation

Ramaswamy, G. S., & Rao, V. V. L. (1971). SI units: A source book. Tata McGraw-Hill Pub. Co..

Chicago Style (17th ed.) Citation

Ramaswamy, G. S., and V. V. Lakshmana Rao. SI Units: A Source Book. Bombay: Tata McGraw-Hill Pub. Co., 1971.

MLA (9th ed.) Citation

Ramaswamy, G. S., and V. V. Lakshmana Rao. SI Units: A Source Book. Tata McGraw-Hill Pub. Co., 1971.