APA (7th ed.) Citation

Volunteers in Technical Assistance. (1980). Helical sail windmill. Volunteers in Technical Assistance.

Chicago Style (17th ed.) Citation

Volunteers in Technical Assistance. Helical Sail Windmill. Mt. Rainier, Md: Volunteers in Technical Assistance, 1980.

MLA (9th ed.) Citation

Volunteers in Technical Assistance. Helical Sail Windmill. Volunteers in Technical Assistance, 1980.

Warning: These citations may not always be 100% accurate.