# References

“Big Number Calculator.” 2019. 2019. https://www.calculator.net/big-number-calculator.html.

Dowle, Matt, and Arun Srinivasan. 2019. *Data.table: Extension of ‘Data.frame‘*. https://CRAN.R-project.org/package=data.table.

Lucas, Antoine, Immanuel Scholz, Rainer Boehme, Sylvain Jasson, and Martin Maechler. 2019. *Gmp: Multiple Precision Arithmetic*. https://CRAN.R-project.org/package=gmp.

Mullen, Lincoln A., Kenneth Benoit, Os Keyes, Dmitry Selivanov, and Jeffrey Arnold. 2018. “Fast, Consistent Tokenization of Natural Language Text.” *Journal of Open Source Software* 3 (23): 655. https://doi.org/10.21105/joss.00655.

Sharaf, Abdulbaqi. 2019a. “First Steps in Text Mining the Quran.” 2019. http://textminingthequran.com/tutorial/tm.html.

———. 2019b. “R Ing with the Quran.” 2019. http://textminingthequran.com/tutorial/tm.html.

Wickham, Hadley. 2019. *Stringr: Simple, Consistent Wrappers for Common String Operations*. https://CRAN.R-project.org/package=stringr.

Wikipedia. 2019. “Abjad Numerals.” 2019. https://en.wikipedia.org/wiki/Abjad_numerals.

Xie, Yihui. 2016. *Bookdown: Authoring Books and Technical Documents with R Markdown*. Chapman; Hall/CRC.

Xie, Yihui, Joe Cheng, and Xianying Tan. 2019. *DT: A Wrapper of the Javascript Library ’Datatables’*. https://CRAN.R-project.org/package=DT.