Tham khảo Rau_diếp

  • Davidson, Alan. The Oxford Companion to Food, s.v. lettuce. Oxford University Press 1999. ISBN 0-19-211579-0.
  • Kirschmann, John D. & Dunne, Lavon J. Nutrition Almanac, s.v. ISBN 0-07-034906-1.

Liên quan