How to cite from a paper using a different citation style? When writing a paper where you are citing from another paper which uses a different citation style, how should one cite portions of text that contain in-text citations? For example


  
    “Malnutrition has often been referred to as “the skeleton in the hospital closet”, as it is often overlooked, under-diagnosed, and untreated [69,70].Despite this, the negative consequences of malnutrition have been widely reported..." (Barker, Grout &amp; Crowe, 2011).
  


An alternative format would be 


  
    "Malnutrition has often been referred to as "the skeleton in the hospital closet" , as it is often overlooked, under-diagnosed, and untreated (McKee, 2011; Busby, 2008; in Barker, Grout, &amp; Crowe, 2011). Despite this...."( Barker, Grout, &amp; Crowe, 2011).
  


This seems an awkward and redundant solution. Would this be considered correct for APA style? What about other citation styles; MLA,etc.?
Echoing the other good comments and answer, I'd encourage you to think in terms of "forthrightness", rather than compliance to semi-random formal criteria. Think of the function of your citations, and thinking of the idealized version of scholarship and such. The goal is not conformity to style guides, but useful contributions to human knowledge, blah-blah-blah, ;) But, yes, that should be the way to think about such questions. 

To my taste, citations in-line should be sufficient so that the reader does not have to "flip to the end" to see what "[46]" is. The space spent on fuller references is a good investment!!! 

That is, yet again, if one thinks that the function of one's writing is to help the reader, all in-line references would be optimally helpful, as opposed to "proper-and-possibly-unhelpful".