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.
