หมวด Encyclopedia:
1. รวมทุกแขนง
//en.wikipedia.org/ //encarta.msn.com/encnet/refpages/artcenter.aspx //encyclopedia.thefreedictionary.com/ //kanchanapisek.or.th/kp6/GENERAL/encyclopedia/saranugrom.htm //reference.allrefer.com/ //www.bartleby.com/65/ //www.britannica.com/ //www.encyclopedia.com/ //www.factmonster.com/ //www.infoplease.com/ //www.probert-encyclopaedia.co.uk/ //www.si.edu/resource/faq/start.htm //www.worldbookonline.com/
2. encyclopedia แยกตาม subjects
//www.encyberpedia.com/eindex.htm //www.refdesk.com/myency.html
3. Encyclopedia of English Grammar and Word Grammar
//www.phon.ucl.ac.uk/home/dick/enc/index.htm หมวดเรียนภาษาอื่นๆ ทั่วโลก
//www.languageguide.org/