• 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/