APA način citiranja (7. izdanje)

Doughty, C., & Williams, J. Focus on form in classroom second language acquisition (2a ed.).

Čikaški stil citiranja (17. izdanje)

Doughty, Catherine, i Jessica Williams. Focus on Form in Classroom Second Language Acquisition. 2a ed.

MLA način citiranja (8. izdanje)

Doughty, Catherine, i Jessica Williams. Focus on Form in Classroom Second Language Acquisition. 2a ed.