APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.