Cita APA (7th ed.)

Billows, F. L. (1961). The techniques of language teaching. Longman.

Cita Chicago (17th ed.)

Billows, F. L. The Techniques of Language Teaching. London: Longman, 1961.

Cita MLA (9th ed.)

Billows, F. L. The Techniques of Language Teaching. Longman, 1961.