Poller, Sonya (22 January 2015). "Alberta's Wonderful World of Bryophytes". Alberta Biodiversity Monitoring Institute Blog. Alberta Biodiversity Monitoring Institute.
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Sci-Tech Encyclopedia (2005). "Hypnales". McGraw-Hill Encyclopedia of Science and Technology. The McGraw-Hill Companies, Inc. Archived from the original on 2008-04-16. Retrieved 1 December 2012 – via Answers.com.
Sci-Tech Encyclopedia (2005). "Hypnales". McGraw-Hill Encyclopedia of Science and Technology. The McGraw-Hill Companies, Inc. Archived from the original on 2008-04-16. Retrieved 1 December 2012 – via Answers.com.