Sci-Tech Encyclopedia (2005). "Hypnales". McGraw-Hill Encyclopedia of Science and Technology. The McGraw-Hill Companies, Inc. Diarsipkan dari asli tanggal 2008-04-16. Diakses tanggal 1 December 2012– via Answers.com.
Buck, W. & Shaw, A. (2008). "Morphology, anatomy, and classification of the Bryophyta". Dalam B. Goffinet & A. Shaw (ed.). Bryophyte Biology (Edisi 2nd). Cambridge: Cambridge University Press. hlm.55–138. doi:10.1017/CBO9780511754807.003. ISBN978-0-521-87225-6.
Sci-Tech Encyclopedia (2005). "Hypnales". McGraw-Hill Encyclopedia of Science and Technology. The McGraw-Hill Companies, Inc. Diarsipkan dari asli tanggal 2008-04-16. Diakses tanggal 1 December 2012– via Answers.com.