APA (7th ed.) Citation

Perren, G. E. (1977). Foreign language testing. Centre for Information on Language Teaching and Research.

Chicago Style (17th ed.) Citation

Perren, George E. Foreign Language Testing. London: Centre for Information on Language Teaching and Research, 1977.

MLA (9th ed.) Citation

Perren, George E. Foreign Language Testing. Centre for Information on Language Teaching and Research, 1977.

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