Cita APA (7th ed.)

Palmer, H. E. (1922). The Principles of language-study. Oxford U. pr..

Cita Chicago (17th ed.)

Palmer, Harold E. The Principles of Language-study. London: Oxford U. pr., 1922.

Cita MLA (9th ed.)

Palmer, Harold E. The Principles of Language-study. Oxford U. pr., 1922.