citeproc

http://rubydoc.info/gems/citeproc-ruby

[1] pry(main)> require 'unicode_utils'
=> true
[2] pry(main)> require 'citeproc'
=> true
[3] pry(main)> book = {
[3] pry(main)*   'author' => [{ 'given' => 'Edgar Allen', 'family' => 'Poe' }],        
[3] pry(main)*   'title' => 'Poetry, Tales, and Selected Essays',        
[3] pry(main)*   'type' => 'book',        
[3] pry(main)*   'issued' => { 'date-parts' => [[1996]] },        
[3] pry(main)*   'editor' => [{ 'family' => 'Quinn', 'given' => 'Patrick F.'}, { 'family' => 'Thompson', 'given' => 'G.R.' }],        
[3] pry(main)*   'publisher' => 'Library of America',        
[3] pry(main)*   'publisher-place' => 'New York'        
[3] pry(main)* }      
=> {"author"=>[{"given"=>"Edgar Allen", "family"=>"Poe"}],
 "title"=>"Poetry, Tales, and Selected Essays",
 "type"=>"book",
 "issued"=>{"date-parts"=>[[1996]]},
 "editor"=>
  [{"family"=>"Quinn", "given"=>"Patrick F."},
   {"family"=>"Thompson", "given"=>"G.R."}],
 "publisher"=>"Library of America",
 "publisher-place"=>"New York"}
[4] pry(main)> CiteProc.process(book, style: 'https://raw.github.com/citation-style-language/styles/master/modern-language-association.csl')
=> "Poe, Edgar Allen. Poetry, Tales, and Selected Essays. Ed. Patrick F. Quinn and G.R. Thompson. New York: Library of America, 1996. Print."
[5] pry(main)>