John Giuffo (December 26, 2013). "Pernil, The Puerto Rican Christmas Pork Roast, Is Your New Holiday Favorite". Forbes. Retrieved December 25, 2014. https://www.forbes.com/sites/johngiuffo/2013/12/26/pernil-the-puerto-rican-christmas-pork-roast-is-your-new-holiday-favorite/2/
Wilo Benet (2009). Puerto Rico. True Flavors. Reed Street Publishing, Tropical Dining Press , Baltimore. p. 155. ISBN 978-0-942929-26-3. 978-0-942929-26-3
John Giuffo (December 26, 2013). "Pernil, The Puerto Rican Christmas Pork Roast, Is Your New Holiday Favorite". Forbes. Retrieved December 25, 2014. https://www.forbes.com/sites/johngiuffo/2013/12/26/pernil-the-puerto-rican-christmas-pork-roast-is-your-new-holiday-favorite/2/