* {{cite ref-web|url=http://tolweb.org/Acari/2554 |titletítol=Acari. The Mites |workobra=[[Tree of Life Web Project]] |authorautor=David Evans Walter, Gerald Krantz & Evert Lindquist |datedata=1996-12-13}}
** {{cite ref-web|url=http://tolweb.org/Acariformes/2563 |authorautor=Heather Proctor |datedata=1998-08-09 |titletítol=Acariformes. The "mite-like" mites |workobra=[[Tree of Life Web Project]]}}
** {{cite ref-web|url=http://tolweb.org/Parasitiformes |authorautor=David Evans Walter |titletítol=Parasitiformes. Holothyrans, ticks and mesostigmatic mites |datedata=1996-12-13 |workobra=[[Tree of Life Web Project]]}}
* {{cite ref-web|url=http://www.lucidcentral.com/keys/lwrrdc/public/aquatics/aghydra/html/about.htm |titletítol=Key to Families and Subfamilies of Water Mites (Hydracarina) in Australia |authorautor=Mark Harvey & Heather Proctor}}
* {{cite ref-web|url=http://www.lucidcentral.org/keys/v3/mites/Invasive_Mite_Identification/key/Whole_site/Home_whole_key.html |titletítol=Invasive Mite Identification |authorautor=David Evans Walter |datedata=2006-09-15 |publishereditor=[[Colorado State University]], Ft. Collins, CO & USDA/APHIS/PPQ Center for Plant Health Science and Technology, Raleigh, NC}}
* [http://www.jove.com/index/details.stp?ID=737 Non-invasive 3D-visualization with sub-micron resolution using synchrotron-X-ray-tomography]
* [http://www.Acari.be A nice website (www.Acari.be) introduces the Acari world in all its amazing variety]
