APA

تأليف Baker A., .Ship or sheep?:An intermediate Pronunciation course. New York:Cambridge University Press,2007: .

Chicago

تأليف Baker Ann, .Ship or sheep?:An intermediate Pronunciation course. New York:Cambridge University Press,2007: .

Harvard

تأليف Baker A., .Ship or sheep?:An intermediate Pronunciation course. New York:Cambridge University Press,2007: .

MLA

تأليف Baker Ann, .New York:Cambridge University Press,2007: . .