Spence, C. (2018). Why is piquant/spicy food so popular? Elsevier.
Chicago Style aipamenaSpence, C. Why Is Piquant/spicy Food so Popular? Elsevier, 2018.
MLA aipamenaSpence, C. Why Is Piquant/spicy Food so Popular? Elsevier, 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.