Rujukan Espresso

  1. ↑ (Inggeris) Illy, Andrea (2005). Espresso coffee: the science of quality. Espresso coffee: the science of quality. ISBN 978-0-12-370371-2. 
  2. ↑ (Inggeris) Espresso Coffee, Coffee Research. Diakses pada 6 Julai 2011.
  3. 1 2 (Inggeris) Zimmer, Susan (2007). I Love Coffee. Andrews McMeel Publishing, LLC. ISBN 978-0-7407-6377-9. 
  4. ↑ "Kosakata Kopi : Espresso, Shot, Cappucino, Latte..." Dicapai 2011-01-12. 
  5. 1 2 3 4 5 6 7 (Inggeris) The History of Espresso, Passion for Coffee. Diakses pada 7 Julai 2011.
  6. ↑ (Inggeris) A Short History of Espresso, Home Barista. Diakses pada 8 Julai 2011.
  7. ↑ "Espresso-based Drinks". Dicapai 20 Oct 2012.