EASSTON, L. B. (1981). Express Ways A Basal Language Program Level 4. The Economy Company.
Čikaški stil citiranja (17. izdanje)EASSTON, Lois Brown. Express Ways A Basal Language Program Level 4. The Economy Company, 1981.
MLA način citiranja (8. izdanje)EASSTON, Lois Brown. Express Ways A Basal Language Program Level 4. The Economy Company, 1981.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.