APA (7th ed.) Citation

International Geological Congress Delhi & Roy, B. C. (1964). Report: Volume of abstracts. [publisher not identified].

Chicago Style (17th ed.) Citation

International Geological Congress Delhi and B. C. Roy. Report: Volume of Abstracts. New Delhi: [publisher not identified], 1964.

MLA (9th ed.) Citation

International Geological Congress Delhi and B. C. Roy. Report: Volume of Abstracts. [publisher not identified], 1964.