http://www.sacerpetroli.it/site/approfondimenti/raffinazioneItalia.htm
http://www.unionepetrolifera.it/wp-content/uploads/2015/06/Relazione-Annuale-2015.pdf
http://www.ilfattoquotidiano.it/2014/07/04/la-crisi-affossa-le-raffinerie-a-rischio-tre-impianti-e-6mila-posti-di-lavoro/1050031/
https://books.google.co.uk/books?id=PSIECAAAQBAJ&pg=PA121&dq=raffinerie+italia&hl=en&sa=X&ved=0ahUKEwiqsKqih77MAhXrL8AKHTxcAqoQ6AEIJDAB#v=onepage&q=raffinerie%20italia&f=false
https://books.google.co.uk/books?id=Qnj9CQAAQBAJ&pg=PA205&dq=raffinerie+italia&hl=en&sa=X&ved=0ahUKEwiekfa0h77MAhXpLMAKHd_LCx84ChDoAQg3MAQ#v=onepage&q=raffinerie%20italia&f=false
