APA (7th ed.) Citation

Sharma, P. C., & Gopalaratnam, V. S. (1980). Ferrocement biogas holder. International Ferrocement Information Center.

Chicago Style (17th ed.) Citation

Sharma, P. C., and V. S. Gopalaratnam. Ferrocement Biogas Holder. Bangkok: International Ferrocement Information Center, 1980.

MLA (9th ed.) Citation

Sharma, P. C., and V. S. Gopalaratnam. Ferrocement Biogas Holder. International Ferrocement Information Center, 1980.