Citazione Stile APA (7a Edizione)

SHEET, H. (1899). The practical study of languages: A guide for teachers and Learners. O.U.P..

Citazione stile Chigago Style (17a edizione)

SHEET, Henry. The Practical Study of Languages: A Guide for Teachers and Learners. London: O.U.P., 1899.

Citatione MLA (9a ed.)

SHEET, Henry. The Practical Study of Languages: A Guide for Teachers and Learners. O.U.P., 1899.