Cita APA (7th ed.)

Fries, C. C. (1977). The structure of english. Longman.

Cita Chicago (17th ed.)

Fries, Charles C. The Structure of English. Gran Bretaña: Longman, 1977.

Cita MLA (9th ed.)

Fries, Charles C. The Structure of English. Longman, 1977.