RSMC Tokyo — Typhoon Centre (2012-01-30). Summary of the 2011 Pacific Typhoon Season(PDF). Typhoon Committee 44th session. Hangzhou, China: The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee. p. 6. Archived(PDF) from the original on 2014-08-26. Retrieved 2012-03-05.
RSMC Tokyo — Typhoon Centre (2012-01-30). Summary of the 2011 Pacific Typhoon Season(PDF). Typhoon Committee 44th session. Hangzhou, China: The Economic and Social Commission for Asia and the Pacific and World Meteorological Organization's Typhoon Committee. p. 6. Archived(PDF) from the original on 2014-08-26. Retrieved 2012-03-05.