Freestone, V. M. (1974). Field installation and maintenance of Capricorder 1598 (digital event water lever [i.e. level] recorder). Ministry of Agriculture and Rural Development.
Lua i Stíl Chicago (17ú heag.)Freestone, V. M. Field Installation and Maintenance of Capricorder 1598 (digital Event Water Lever [i.e. Level] Recorder). [Kuala Lumpur]: Ministry of Agriculture and Rural Development, 1974.
Lua MLA (8ú heag.)Freestone, V. M. Field Installation and Maintenance of Capricorder 1598 (digital Event Water Lever [i.e. Level] Recorder). Ministry of Agriculture and Rural Development, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.