I have a question about in text citation about this excerpt:

Jones (1991) found this approach correct (as cited by Lynn, 2001,p.5)

here I read an article in which the author (Lynn)referred to another author (Jones). I could not find the primary source of Jones but I want to include this information.

Should I write the year of the original reference (1991) next to the name of Jones?
Do I have to write it like this (as cited by Lynn, 2001,p.5)?

What about if I am quoting, do i have to say (As quoted in Lenn, 2009, p. 56)

Thanks

Question

I have a question about in text citation about this excerpt:

Jones (1991) found this approach correct (as cited by Lynn, 2001,p.5) 

here I read an article in which the author (Lynn)referred to another author (Jones). I could not find the primary source of Jones but I want to include this information.  

Should I write the year of the original reference (1991) next to the name of Jones?
Do I have to write it like this (as cited by Lynn, 2001,p.5)?

What about if I am quoting, do i have to say (As quoted in Lenn, 2009, p. 56)

Thanks