APA

Thorn M. ت., .Thinking English. UK:Princeton University,1982: .

Chicago

Thorn Michael تأليف, .Thinking English. UK:Princeton University,1982: .

Harvard

Thorn M. ت., .Thinking English. UK:Princeton University,1982: .

MLA

Thorn Michael تأليف, .UK:Princeton University,1982: . .