APA (7th ed.) Citation

Sahni, M. R., & Mathur, L. P. (1964). Stratigraphy of the Siwalik group. [publisher not identified].

Chicago Style (17th ed.) Citation

Sahni, M. R., and L. P. Mathur. Stratigraphy of the Siwalik Group. New Delhi: [publisher not identified], 1964.

MLA (9th ed.) Citation

Sahni, M. R., and L. P. Mathur. Stratigraphy of the Siwalik Group. [publisher not identified], 1964.