Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Billows, F. L. The Techniques of Language Teaching. Longmans, Green, 1961.