APA
Tillman G., . (1981). Environmentally sound small-scale water projects. New York: Volunteers in Technical Assistance.
Chicago
Tillman Gus, . 1981. Environmentally sound small-scale water projects. New York: Volunteers in Technical Assistance.
Harvard
Tillman G., . (1981). Environmentally sound small-scale water projects. New York: Volunteers in Technical Assistance.
MLA
Tillman Gus, . Environmentally sound small-scale water projects. New York: Volunteers in Technical Assistance. 1981.