- www.rondebruin.nl/win/s1/outlook/mail.htm
- www.parengan.com
- www.komputermedia.com
- www.fahrurrozi.com
- www.cof.orst.edu/net/software/excel/tips/
- blogs.office.com/b/microsoft-excel/archive/2011/10/11/excel-tip-learn-text-formulas.aspx
- kasusx.wordpress.com
- spreadsheetpage.com/index.php/tips
- rumahaccess.com
- exceluser.com/downloads/index.htm
- www.ablebits.com/office-addins-blog/2013/12/03/remove-carriage-returns-excel/
- http://www.gcflearnfree.org/excel2013/20.2
- http://www.techrepublic.com/blog/10-things/10-plus-tips-for-working-with-excels-subtotal-feature/
Excel VBA to mySQL
- https://www.youtube.com/watch?v=VQc4rzaXZUw
- https://analysistabs.com/excel-vba/ado-sql-macros-connecting-database/