Hashemi, L. (2003). Objective PET: Teacher's book. Cambridge, UK: Cambridge University Press.
Čikaški stil citiranjaHashemi, Louise. Objective PET: Teacher's Book. Cambridge, UK: Cambridge University Press, 2003.
MLA način citiranjaHashemi, Louise. Objective PET: Teacher's Book. Cambridge, UK: Cambridge University Press, 2003.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.