APA (7th ed.) Zitazioa
SIMPSON, M. (1998). JUST SAY 'NO'?. ALCOHOL AND PEOPLE WITH LEARNING DIFFICULTIES.
Chicago Style (17th ed.) Zitazioa
SIMPSON, M.K. JUST SAY 'NO'?. ALCOHOL AND PEOPLE WITH LEARNING DIFFICULTIES. 1998.
MLA (9th ed.) Zitazioa
SIMPSON, M.K. JUST SAY 'NO'?. ALCOHOL AND PEOPLE WITH LEARNING DIFFICULTIES. 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.