Hagan, R. M., Houston, C. E., & Allison, S. V. (1968). Successful irrigation: Planning, development, management. Food and Agriculture Organization of the United Nations.
Lua i Stíl Chicago (17ú heag.)Hagan, Robert Mower, Clyde E. Houston, agus Stephen V. Allison. Successful Irrigation: Planning, Development, Management. Rome: Food and Agriculture Organization of the United Nations, 1968.
Lua MLA (8ú heag.)Hagan, Robert Mower, et al. Successful Irrigation: Planning, Development, Management. Food and Agriculture Organization of the United Nations, 1968.
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