Indian standards institution . ISi. (1977). Glossary of terms relating to river valley projects IS: 4410 (1.). Indian standards institution.
Παραπομπή Chicago StyleIndian standards institution . ISi. Glossary of Terms Relating to River Valley Projects IS: 4410. 1. New Delhi: Indian standards institution, 1977.
Παραπομπή MLAIndian standards institution . ISi. Glossary of Terms Relating to River Valley Projects IS: 4410. 1. Indian standards institution, 1977.