How to cite the same reference in a paragraph twice in APA style?
Yes, you can. Check out an example from the invaluable APA Style Blog:


  Morin (1988) described two separate but linked epidemics. . . . Morin
  distinguished the HIV (viral) epidemic from the subsequent AIDS
  (disease) epidemic, foreseeing the ultimate convergence of preventing
  the spread of the virus and managing the disease it causes. . . .
  Morin also discussed a third epidemic . . . . This third epidemic is
  as much a part of the pathology of AIDS as the virus itself (Morin,
  1988).
  
  Socioeconomic status (SES) and chronic diseases rather consistently
  fall on a gradient, where those of relatively lower SES have poorer
  health and are more often afflicted by multiple diseases than those
  above them on the SES ladder (Adler &amp; Stewart, 2010). . . . Adler and
  Stewart (2010) offered a framework to explain the major pathways by
  which SES can influence health outcomes. . . . The model is
  developmental, illustrating individual, social, and structural
  influences on disease over the lifespan (Adler &amp; Stewart, 2010).