APA (7th ed.) Zitazioa
EMERSON, E., & ET AL. (1997). THE PREVALENCE OF CHALLENGING BEHAVIOUR. HESTER ADRIAN RESEARCH CENTRE.
Chicago Style (17th ed.) Zitazioa
EMERSON, E., eta ET AL. THE PREVALENCE OF CHALLENGING BEHAVIOUR. MANCHESTER (UK): HESTER ADRIAN RESEARCH CENTRE, 1997.
MLA (9th ed.) Zitazioa
EMERSON, E., eta ET AL. THE PREVALENCE OF CHALLENGING BEHAVIOUR. HESTER ADRIAN RESEARCH CENTRE, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.