APA (7th ed.) Citation

Ball, W. Conversation english an analysis of contemporary spoken english for foreign students. Longmans.

Chicago Style (17th ed.) Citation

Ball, W.J. Conversation English an Analysis of Contemporary Spoken English for Foreign Students. Longmans.

MLA (8th ed.) Citation

Ball, W.J. Conversation English an Analysis of Contemporary Spoken English for Foreign Students. Longmans.

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