Letter from PRG Redshaw to Bernard Smithen regarding spreadsheet requested by Ken Ojo

Chicago citation style
Redshaw, PRG. Letter from PRG Redshaw to Bernard Smithen regarding spreadsheet requested by Ken Ojo. 2003 March 20. Retrieved from the Digital Public Library of America, https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=flbm0189. (Accessed December 12, 2018.)
APA citation style
Redshaw, PRG, (2003 March 20) Letter from PRG Redshaw to Bernard Smithen regarding spreadsheet requested by Ken Ojo. Retrieved from the Digital Public Library of America, https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=flbm0189
MLA citation style
Redshaw, PRG. Retrieved from the Digital Public Library of America <https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=flbm0189>.
Note: These citations are programmatically generated and may be incomplete.