APA način citiranja (7. izdanje)

Collins, P. (2009). Modals and quasi-modals in English. Rodopi.

Čikaški stil citiranja (17. izdanje)

Collins, Peter. Modals and Quasi-modals in English. Amsterdam ; New York, NY: Rodopi, 2009.

MLA način citiranja (9. izdanje)

Collins, Peter. Modals and Quasi-modals in English. Rodopi, 2009.