"RPG/400". IBM.com. International Business Machines Corporation. 8 May 2018. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"ILE RPG Reference". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"ILE RPG Programmer's Guide". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"Who Should Use This Guide". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"High Level Languages". IBM.com. International Business Machines Corporation. 8 May 2018. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"IBM Rational Developer for i". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.
IBM. "RPG Cafe". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.
IBM. "IBM i Technology Updates". IBM.com. International Business Machines Corporation. Archived from the original on 12 April 2022. Retrieved 3 April 2022.
IBM. "IBM i Technology Refresh". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.
"RPG/400". IBM.com. International Business Machines Corporation. 8 May 2018. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"ILE RPG Reference". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"ILE RPG Programmer's Guide". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"Who Should Use This Guide". IBM.com. International Business Machines Corporation. June 2012. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"High Level Languages". IBM.com. International Business Machines Corporation. 8 May 2018. Archived from the original on 3 April 2022. Retrieved 4 April 2022.
"IBM Rational Developer for i". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.
IBM. "RPG Cafe". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.
IBM. "IBM i Technology Updates". IBM.com. International Business Machines Corporation. Archived from the original on 12 April 2022. Retrieved 3 April 2022.
IBM. "IBM i Technology Refresh". IBM.com. International Business Machines Corporation. Archived from the original on 3 April 2022. Retrieved 3 April 2022.