APA način citiranja (7. izdanje)

Ferguson, N., & O'Reilly, M. English by objectives. Student's Book. Units 6-10.

Čikaški stil citiranja (17. izdanje)

Ferguson, Nicolas, i Máire O'Reilly. English by Objectives. Student's Book. Units 6-10.

MLA način citiranja (8. izdanje)

Ferguson, Nicolas, i Máire O'Reilly. English by Objectives. Student's Book. Units 6-10.