APA način citiranja

Λιγγρής, Ν., & Βέμπερ, Κ. (1989). Ωmega english learner's dictionary: For speaker's of greek. [Athens]: Ωmega ELT Publications.

Čikaški stil citiranja

Λιγγρής, Νίκος, i Κλειώ Βέμπερ. Ωmega English Learner's Dictionary: For Speaker's of Greek. [Athens]: Ωmega ELT Publications, 1989.

MLA način citiranja

Λιγγρής, Νίκος, i Κλειώ Βέμπερ. Ωmega English Learner's Dictionary: For Speaker's of Greek. [Athens]: Ωmega ELT Publications, 1989.