Draper, L. (1978). Waves measured at Helwick Light Vessel, Bristol Channel: Data for August 1960 to July 1961 at position 51⁰30.5ʹN, 4⁰25.5ʹW. Institute of Oceanographic Sciences.
Chicago Style (17th ed.) CitationDraper, L. Waves Measured at Helwick Light Vessel, Bristol Channel: Data for August 1960 to July 1961 at Position 51⁰30.5ʹN, 4⁰25.5ʹW. Wormley, Surrey: Institute of Oceanographic Sciences, 1978.
MLA (9th ed.) CitationDraper, L. Waves Measured at Helwick Light Vessel, Bristol Channel: Data for August 1960 to July 1961 at Position 51⁰30.5ʹN, 4⁰25.5ʹW. Institute of Oceanographic Sciences, 1978.
Warning: These citations may not always be 100% accurate.