APA

Wilkins D. A., . (1979). National syllabuses. Oxford: Oxford university press.

Chicago

Wilkins D A, . 1979. National syllabuses. Oxford: Oxford university press.

Harvard

Wilkins D. A., . (1979). National syllabuses. Oxford: Oxford university press.

MLA

Wilkins D A, . National syllabuses. Oxford: Oxford university press. 1979.